With this tool you can look up which number is a factor of a number, but not a multiple of the same number or a different number.

In other words, we will answer questions formulated like this: "Which number is a factor of a, but not a multiple of b?" where a and b can be the same or different.

Please submit your problem below to get started.

Not sure which numbers to look up? Check out the examples below to learn.

Which number is a factor of 10, but not a multiple of 2?

Which number is a factor of 10, but not a multiple of 5?

Which number is a factor of 12, but not a multiple of 3?

Which number is a factor of 14, but not a multiple of 2?

Which number is a factor of 15, but not a multiple of 3?

Which number is a factor of 16, but not a multiple of 4?

Which number is a factor of 16, but not a multiple of 8?

Which number is a factor of 18, but not a multiple of 6?

Which number is a factor of 20, but not a multiple of 10?

Which number is a factor of 20, but not a multiple of 2?

Which number is a factor of 20, but not a multiple of 4?

Which number is a factor of 20, but not a multiple of 5?

Which number is a factor of 21, but not a multiple of 7?

Which number is a factor of 22, but not a multiple of 11?

Which number is a factor of 24, but not a multiple of 12?

Which number is a factor of 24, but not a multiple of 6?

Which number is a factor of 24, but not a multiple of 8?

Which number is a factor of 8, but not a multiple of 4?