What is the LCM of 4 and 16?

What's the Least Common Multiple (LCM) of 4 and 16?

Answer

LCM of 4 and 16 is

16

First common multiples: 16, 32, 48, …

As a common denominator: multiply the top and bottom of x/4 by 4.

4 divides 16 (16 ÷ 4 = 4), so the LCM is the larger number itself.

4 = 2²

16 = 2⁴

Prime	4	16	Highest power
2	2²	2⁴	2⁴

LCM = 2⁴ = 16

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