The first factor pair is always 1 and the number itself. Consider whether the number is divisible, in turn, by 2, 3, 4, etc. Divide to find the other factor of the pair. All the factors are found when ...

list the factors of the two numbers select the highest factor on both lists. A common multiple is a number that is a multiple of two or more numbers. To find the lowest common multiple (LCM) of two ...