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# Finding the Factors of a Number

**00:01**
Surprise! This lesson is not a lesson. It’s a challenge. Your challenge is to find the factors of a number. A factor is a positive number that can divide another number perfectly without any remainder. So for example, say you have 10.

**00:16**
5 is a factor of 10 because it divides perfectly. If you do 10 divided by 5, you get 2 without any remainder. 5 is a factor of 10. So is 2, because if you divide 10 by 2, you get 5 with no remainder.

**00:32**
So the challenge is for an input of any positive whole number—an integer—list all the factors of that number.

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