What are all the factors, the prime factorization, and factor pairs of 7?

To find the factors of 7, divide 7 by each number starting with 1 and working up to 7

Now let us find how to calculate all the factors of 7:
As you can see, the factors of 7 are:
1, 7

Factors of Numbers similar to 7

Introduction to Factors

Factors are the building blocks of numbers, defined as the integers that can evenly divide a given number with no remainder. For instance, with number 7 as an example, factors are those numbers which, when multiplied together, produce the number 7. This exploration into the world of factors is not only fundamental to understanding 7 but also illuminates comprehension of its distinct structure within the realm of mathematics.

What are Factors of 7?

Factors of the number 7 are the whole numbers which can be multiplied together to reach the product of 7. Since 7 is a prime number, it has a very straightforward set of factors. Here’s a visual representation and a list of those factors:

  • 1 × 7 = 7

The list of factors for the number 7, therefore, includes just two numbers: 1 and 7.

How to Find the Factors of 7?

Finding the factors of 7 can be achieved through the simple method of division. Since 7 is a prime number, it will only be divisible by itself and 1, resulting in whole numbers. Follow the process below to determine the factors of 7:

  • 7 ÷ 1 = 7
  • 7 ÷ 7 = 1

This methodology confirms that the only factors of 7 are 1 and 7, as division by any other integer will result in a non-whole number or a fraction.

Pair Factors of 7

For the number 7, the concept of pair factors is quite straightforward. Since 7 is a prime number, the only pair of positive factors that multiply together to form 7 is (1, 7). Correspondingly, the pair of negative factors is (-1, -7), because the product of two negative numbers also results in a positive number. Here is the list of both positive and negative pair factors for 7:

Positive Pair Factors Negative Pair Factors
(1, 7) (-1, -7)

Prime Factorization of 7

The prime factorization of 7 is an uncomplicated process due to its prime nature. Essentially, prime factorization involves breaking down a number into its basic prime factors that, when multiplied together, equal the number itself. For 7, the prime factorization is simply 7 itself, as it cannot be divided into other prime factors. Visually, the factor tree diagram for 7 would have just a single branch, stemming from the prime number 7.

Important Points to Remember

When discussing the factors of 7, there are a few key points worth recapping:

  • 7 is a prime number, hence its only positive factors are 1 and itself.
  • There are no other factors besides 1 and 7, making the total count of factors exactly two.
  • The sum of the factors of 7 is 1 + 7 = 8.

Understanding the prime nature of the number 7 is an essential step in discerning the composition of numbers within mathematics.


Try solving these exercises to better understand the factors of 7:

  • List all the factors of the number 7.
  • What is the sum of all the factors of 7?

Solutions to Exercises

Here are the solutions to the exercises:

  • The factors of 7 are: 1 and 7.
  • The sum of all the factors of 7 is: 1 + 7 = 8.

Frequently Asked Questions

Is 7 a prime number?

Yes, 7 is a prime number because its only factors are 1 and itself.

Can 7 have any other factors apart from 1 and itself?

No, since 7 is prime, it does not have factors other than 1 and 7.

Other conversions of the number 7