8,16
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All composite numbers have prime factors and these are used to find the highest common factor of 2 or more numbers and they are also used in finding the lowest common multiple of 2 or more numbers. Composite numbers have 2 or more factors while prime numbers have only 2 factors which are themselves and one
The least common multiple (LCM) of eight and sixteen is 16. The multiples of eight are 8, 16, 24, 32, and so on, while the multiples of sixteen are 16, 32, 48, 64, and so on. The LCM is the smallest number that is a multiple of both eight and sixteen, which in this case is 16.
A common multiple is a multiple that two or more given numbers have in common. 16 is not a common multiple of 7 and 8. 16 is a common multiple of 4 and 8. So, it depends on the numbers for which you are trying to find a common multiple.
A common multiple. If it is the lowest possible combination of those numbers, it is called the Least Common Multiple or LCM.