Factors

# Factors of 77 | Prime Factorization of 77 | Factor Tree of 77

Written by Prerit Jain

Updated on: 11 Jun 2023

Contents

### Factors of 77 | Prime Factorization of 77 | Factor Tree of 77

## Factors of 77

Factors of 77 | Factor Pairs of 77 | Prime factors of 77 |

1, 7, 11, 77 | (1,77) (7,11) (11,7) | 7 x 11 |

Calculate Factors of

**The Factors are**

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## What are the factors of 77

An integer is a whole number, and a factor of an integer is another integer that can be evenly divided into it. For example, the factors of 8 are 1, 2, 4, and 8, because these are the integers that can be evenly divided into 8.

The factors of an integer can be found by dividing the integer by each of the integers between 1 and itself. For example, to find the factors of 8, we can divide 8 by 1, 2, 4, and 8:

8 ÷ 1 = 8 (1 is a factor of 8)

8 ÷ 2 = 4 (2 is a factor of 8)

8 ÷ 4 = 2 (4 is a factor of 8)

8 ÷ 8 = 1 (8 is a factor of 8)

In the case of 77, the factors are 1, 7, 11, and 77. These are all the integers that can be evenly divided into 77.

The prime factorization of an integer is a way of expressing the integer as the product of its prime factors. A prime factor is a prime number (a number that is only divisible by 1 and itself) that is a factor of the integer. The prime factorization of 77 is 7 x 11, which means that 77 can be written as the product of the prime numbers 7 and 11. The exponent (in this case, 2) indicates the number of times each prime number is a factor of the integer. So in this case, 7 is a factor of 77 once, and 11 is a factor of 77 once.

## How to Find Factors of 77

To find the factors of 77, you can use one of the following methods:

- Factors of 77 using the Multiplication Method
- Factors of 77 using the Division Method
- Prime Factorization of 77
- Factor tree of 77

## Factors of 77 Using the Multiplication Method

The prime factorization of 77 is 7 x 11. This means that 77 can be expressed as the product of these three prime numbers. To find the factors of 77, we can create different combinations of these prime numbers by multiplying them together.

The factors of 77 are all the numbers that can be obtained by multiplying together some or all of the prime factors in the prime factorization of 77, which are 2, 2, and 19. Here are all the possible combinations:

1 x 77

7 x 11

These combinations yield the following factors of 77: 1, 7, 11, and 77.

## Factors of 77 Using the Division Method

- The following are the steps involved in the division method:
- Starting with 1: 77 ÷ 1 = 77 (quotient is an integer) So, 1 and 77 are factors of 77.
- Moving on to 2: 77 ÷ 2 = 38.5 (quotient is not an integer)
- Next, 3: 77 ÷ 3 = 25.67 (quotient is not an integer)
- Continuing, 4: 77 ÷ 4 = 19.25 (quotient is not an integer)
- Trying 5: 77 ÷ 5 = 15.4 (quotient is not an integer)
- Proceeding to 6: 77 ÷ 6 = 12.83 (quotient is not an integer)
- Attempting 7: 77 ÷ 7 = 11 (quotient is an integer) So, 7 and 11 are factors of 77.
- As we continue to divide by higher numbers, we will not find any more factor pairs. Therefore, the factors of 77 are 1, 7, 11, and 77.

## Prime Factorization of 77

Calculate Prime Factors of

The Prime Factors of 77 =

7 x

11

Certainly! Here is another way to find the prime factorization of a number:

- To begin, we divide 77 by the smallest prime number, which is 2. However, 77 is not divisible by 2.
- Next, we divide 77 by the next prime number, which is 3. 77 divided by 3 equals 25 remainder 2.
- We continue dividing by prime numbers until we reach the largest prime factor.
- Dividing 77 by 5 gives us 15 remainder 2.
- Finally, dividing 77 by 7 gives us 11 remainder 0.
- At this point, we have obtained the prime factorization of 77:
- 77 = 7 x 11
- Therefore, the prime factorization of 77 is 7 x 11.

## Factor tree of 77

- Write the number 77 at the top of a sheet of paper.
- Divide 77 by 2. The result is 38.5. However, 77 is not divisible by 2. We will ignore this.
- Divide 77 by 3. The result is 25.67. 77 is not divisible by 3. We will ignore this.
- The smallest prime number that divides 77 evenly is 7. Divided by 7 equals 11.
- Since 11 is a prime number, we have reached the prime factorization of 77: 7 x 11.
- In the factor tree, we start with the number 77 at the top. Then we divide 77 into its prime factors, which are 7 and 11. Both 7 and 11 are prime numbers, so we stop and write them as the branches of the tree.

**This shows that factors 77 are 1, 7, 11, and 77.**

## Factor Pairs of 77

Calculate Pair Factors of

1 x 77=77

7 x 11=77

11 x 7=77

So Pair Factors of 77 are

(1,77)

(7,11)

(11,7)

The factor pairs of 77 are the pairs of numbers that can be multiplied together to equal 77. They are as follows:

1 x 77 = 77

7 x 11 = 77

**So the factor pairs of 77 are (1, 77) and (7, 11).**

## More factors

## Factors of 77 – Quick Recap

**Factors of 77:**1, 7,11 and 77.**Negative Factors of 77:**-1,-7,-11 and -77.**Prime Factors of 77:**7 and 11.**Prime Factorization of 77:**7 x 11.

## Factors of 77 – Fun Facts

- 77 is the atomic number of osmium, which is a chemical element with the symbol Os.
- The factors of 77 add up to 88, which is the atomic number of radium, another chemical element.
- 77 is a composite number, which means it has more than two factors.
- 77 is also a Harshad number, which is a number that is divisible by the sum of its digits.
- 77 is a palindrome, which means it reads the same forward and backwards.
- The Roman numeral for 77 is LXXVI.
- 77 is the number of keys on a typical piano.
- The factors of 77 can be used to make a variety of different fractions, such as 38/2, 19/4, and 77/1.

**Also Check**: Multiples, Square Root, and LCM

## Solved Examples of Factor of 77

**Q**.**1: What is the greatest common factor of 77 and 55?Solution:** The greatest common factor (GCF) of 77 and 55 is 11.

**Q.2: How many factors does 77 have? Solution: **The factors of 77 are 1, 7, 11, and 77.

**Q.3: What number can divide into 77 evenly? ****Solution: **Any number from 1-77 can divide into 77 with no remainders, but some will produce fractions or decimals instead of a whole number result.

**Q.4:****Is there a difference between the factors and multiples of 77? Solution: **While factors and multiples have similar definitions in that they both refer to groups or collections of related numbers generated by multiplying or dividing a given number, there is an important difference between them – factors refer to how many times the original number can be divided evenly while multiples make reference to how many times it has been multiplied by itself.

**Q.5:** What is the least common multiple (LCM)of 76? **Solution: **The prime factorization of 76 is 2^2 * 19. To calculate the LCM, we take the highest power of each prime factor: The highest power of 2 is 2^2 = 4. The highest power of 19 is 19^1 = 19. Now, we multiply the highest powers:4 * 19 = 76. Therefore, the least common multiple (LCM) of 76 is 76 itself.

**Q.6:** What is the sum of all positive integer divisors for 76? **Solution: **The sum of the positive integer divisors for 76 is 140; 1 + 2 + 4 + 19 + 38 + 76 = 140.

** Q.7:**

**What Are Some Examples Of Factors Of 76?**

**Solution:**Some examples of factors of 76 include1,2,4,19,38, and 76.

**Q.8:****How do you calculate the LCM (Least Common Multiple)of 76? ****Solution: **Find the prime factorization of 76: 76 = 2^2 * 19. This means that 76 can be expressed as the product of its prime factors, where 2 appears twice and 19 appears once. Identify the highest power of each prime factor. In this case, the highest power of 2 is 2^2 (or 4) and the highest power of 19 is 19^1 (or 19). Multiply the highest powers of each prime factor: 4 * 19 = 76. This gives us an LCM of 76.

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## Frequently Asked Questions on Factors of 77

**How many factors does 77 have?**

There are 12 factors of 77; 1,2,4,19,38,77,-1,-2,-4,-19,-38,-77.

**What number can divide into 77 evenly?**

Any number from 1-77 can divide into 77 with no remainders, but some will produce fractions or decimals instead of a whole number result.

**Is there a difference between the factors and multiples of 77?**

While factors and multiples have similar definitions in that they both refer to groups or collections of related numbers generated by multiplying or dividing a given number, there is an important difference between them – factors refer to how many times the original number can be divided evenly while multiples make reference to how many times it has been multiplied by itself.

**What is the least common multiple (LCM)of 76?**

The prime factorization of 76 is 2^2 * 19. To calculate the LCM, we take the highest power of each prime factor: The highest power of 2 is 2^2 = 4. The highest power of 19 is 19^1 = 19. Now, we multiply the highest powers:4 * 19 = 76. Therefore, the least common multiple (LCM) of 76 is 76 itself.

**What is the sum of all positive integer divisors for 76?**

The sum of the positive integer divisors for 76 is 140; 1 + 2 + 4 + 19 + 38 + 76 = 140.

**What Are Some Examples Of Factors Of 76?**

Some examples of factors of 7 6 include1,2,4,19,38, and 76.

**How do you calculate the LCM (Least Common Multiple)of 76?**

The prime factorization of 76 is 2^2 * 19. To calculate the LCM, we take the highest power of each prime factor: The highest power of 2 is 2^2 = 4. The highest power of 19 is 19^1 = 19. Now, we multiply the highest powers:4 * 19 = 76. Therefore, the least common multiple (LCM) of 76 is 76 itself.

Written by

Prerit Jain