What are the common factors of 98 and 126?

A factor is a divisor - a number that will evenly divide into another number.

One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them.

The factors of 98 are 1, 2, 7, 14, 49, and 98.

The factors of 126 are 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, and 126.

The common factors are 1, 2, 7, and 14.