Here we will discuss and show you how to figure out which number is a factor of 36, but not a multiple of 21.
The most common way to determine which number is a factor of 36, but not a multiple of 21, is to simply list the factors of 36 and the multiples of 21 so you can compare the two lists.
The answer to "Which number is a factor of 36, but not a multiple of 21?" would be all the numbers that are on the Factors of 36 list, but not on the Multiples of 21 list.
Factors of 36: 1, 2, 3, 4, 6, 9, 12, 18, 36
Multiples of 21: 21, 42, 63, 84, 105...
Answer: 1, 2, 3, 4, 6, 9, 12, 18, 36
Alternatively, you can figure out which number is a factor of 36, but not a multiple of 21, by dividing every factor of 36 by 21. The answer would be all the quotients that are not integers.
Factor, but not a Multiple
You can submit another "Which number is a factor, but not a multiple?" problem below.
Which number is a factor of 37, but not a multiple of 21?
Here is a similar problem in our Multiples database that we have solved for you.