LCM for 20 and 410
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What's the Least Common Multiple (LCM) of 20 and 410?
Answer
LCM of 20 and 410 is
820
First common multiples: 820; 1,640; 2,460; …
820 is divisible by both: 820 ÷ 20 = 41, 820 ÷ 410 = 2 — and 41 and 2 share no factor but 1, so no smaller number is. As a common denominator: multiply the top and bottom of x/20 by 41 and of y/410 by 2.
20 = 22 × 5
410 = 2 × 5 × 41
| Prime | 20 | 410 | Highest power |
|---|---|---|---|
| 2 | 22 | 2 | 22 |
| 5 | 5 | 5 | 5 |
| 41 | — | 41 | 41 |
— = power 0: the prime is not a factor of this number; the LCM takes it from the number that has it.
LCM = 22 × 5 × 41 = 820
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See Also
- Greatest Common Factor - Find the Greatest Common Factor (GCF) of two numbers
- Least Common Multiple of 3 Numbers - Find the Least Common Multiple (LCM) of three numbers
- Greatest Common Factor of 3 Numbers - Find the Greatest Common Factor (GCF) of three numbers
- Multiples of a Number - List the first 10 multiples of any number from 1 to 999
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