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

The factors of a number of interest refer to all the numbers that are smaller or equal to the number of interest that can be divided into it evenly. This means that there is no remainder left after the division. The opposite of a factor is a multiple, which refers to numbers obtained by multiplying a number of interest by integers. For example, the number 3 has multiples of 6, 9, 126 and many more.