Home > Prealgebra > Divisibility and Factors

How do you find all the factors of 28?

Answer 1

2,14,4,7,1,28

Find biggest and smallest factor Your biggest factor is the number itself, #28#. With the biggest number, you also have the smallest factor, #1#.

For the rest of the factors; Divide the number by #2#. #28/2=14#. Hence you should be looking for factors no bigger than #14#.

You already have #14# and #2#.

Find factors of smaller factors What is a factor of #14#?

#7#!

If #7# is a factor of #14#, it should be a factor of #28#. If so, what times #7# becomes #28#?

Every factor has its pair If you've found a factor, ie: 2, It should have its pair. Just divide the number by 2. If a factor is 7, divide 28 by 7 and you get 4.

By signing up, you agree to our Terms of Service and Privacy Policy

Answer 2

Gabriel Agustin

To find all the factors of 28, you can divide 28 by each integer starting from 1 up to the square root of 28. If the division yields a whole number, then that integer is a factor of 28. The factors of 28 are: 1, 2, 4, 7, 14, and 28.

By signing up, you agree to our Terms of Service and Privacy Policy

Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.