list

Finding factors of a number | Factors and multiples | Pre-Algebra | Khan Academy

0:00
Toggle fullscreen Fullscreen button

Sharing buttons:

Find all of the factors of 120.

Or another way to think about it, find all of the whole

numbers that 120 is divisible by.

So the first one, that's maybe obvious.

All whole numbers are divisible by 1.

So we could write 120 is equal to is to 1 times 120.

So let's write a factors list over here.

So this is going to be our factors list over here.

So we just found two factors.

We said, well, is it divisible by 1?

Well, every whole number is divisible by 1.

This is a whole number, so 1 is a factor at the low end.

1 is a factor.

That's its actual smallest factor, and its

largest factor is 120.

You can't have something larger than 120 dividing

evenly into 120.

121 will not go into 120.

So the largest factor on our factors list

is going to be 120.

Now let's think about others.