How do you know when you have all of the divisors of a number?

Answer 1

You can start by dividing them by consecutive numbers. If the next number is the result of a division it means you're done

I'll find the divisors of 1000

1000 / 1 = 1000

1000 / 2 = 500

1000 / 4 = 250

1000 / 5 = 200

1000 / 8 = 125

1000 / 10 = 100

1000 / 20 = 50

1000 / 25 = 40

Now I'm done because the next number I could divide 1000 by is 40 but since I already have 40 it means I'm done

You can factorize the number too and use it to help you. 1000 = 2^3 x 5^3 by the way

By the way if the number is a square you divide it by every number you can until you reach its square root

Answer 2

I'm going to give an example... If you were trying to find the divisors of 20, you would need to do something like... 20 divided by 1, 2, 3, 4, 5,... until you get to 20...