You have come to the right place if you are looking for a list of all of the factors for 21.
The factors of 21 are all the numbers that you can multiply by another number to get 21.
Therefore, if you you divide any of the factors of 21 by a factor, it will give you another factor of 21.
All of the factors of 21 are listed below. The factors of 21 are listed with the smallest number first, which is 1, and the largest number last, which is 21.
1, 3, 7, 21
Note that all factors of 21 are whole postive numbers. In other words, the factors of 21 are postive integers that go evenly into 21.
We don't only know the factors of 21. Go here to find the factors for another number.
What are the factors of 22?
Now you know the factors of 21. You may also be interested in the answer to the next question on our list.