**The factors of 144 are 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72 and 144.** Of these factors, the only prime factors are two and three; the rest can be reduced further into their own factors if desired. The number 144 is also a perfect square since it is equal to 12 multiplied by 12.

A factor is one of any set of two numbers that can be multiplied together to yield the original number, in this case 144. Factors can be identical in the case of perfect squares, where the set of two numbers are identical, like 12 and 12.