LCM for 20 and 220

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What's the Least Common Multiple (LCM) of 20 and 220?

Answer

LCM of 20 and 220 is
220

First common multiples: 220, 440, 660, …

As a common denominator: multiply the top and bottom of x/20 by 11.

20 divides 220 (220 ÷ 20 = 11), so the LCM is the larger number itself.

20 = 22 × 5

220 = 22 × 5 × 11

Prime20220Highest power
2222222
5555
11—1111

— = power 0: the prime is not a factor of this number; the LCM takes it from the number that has it.

LCM = 22 × 5 × 11 = 220

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LCM Table

Number 1Number 2LCM
2090180
20100100
20105420
20125500
20135540
20140140
20145580
20150300
20160160
20165660
20170340
20175700
20185740
20190380
20210420
20220220
20225900
20230460
202551,020
202751,100
202851,140
20290580
202951,180
20300300
203051,220
203251,300
203351,340
20350700
203551,420
20400400

FAQ

What's the Least Common Multiple (LCM) of 20 and 220?

LCM of 20 and 220 is 220

How to find the LCM of 20 and 220 using prime factorization?

To find the LCM of 20 and 220, find all prime factors of both numbers, then multiply the highest power of each prime factor. The result is 220.

What is the difference between LCM and GCF?

LCM (Least Common Multiple) is the smallest number divisible by both numbers, while GCF (Greatest Common Factor) is the largest number that divides both. For 20 and 220: LCM = 220, GCF = 20.

See Also