LCM for 19 and 20
"Least Common Multiple" Calculator
What's the Least Common Multiple (LCM) of 19 and 20?
Answer
LCM of 19 and 20 is
380
First common multiples: 380; 760; 1,140; …
380 is divisible by both: 380 ÷ 19 = 20, 380 ÷ 20 = 19 — and 20 and 19 share no factor but 1, so no smaller number is. As a common denominator: multiply the top and bottom of x/19 by 20 and of y/20 by 19.
19 and 20 are coprime (GCF = 1), so their LCM is simply the product: 19 × 20 = 380.
19 — prime
20 = 22 × 5
| Prime | 19 | 20 | Highest power |
|---|---|---|---|
| 2 | — | 22 | 22 |
| 5 | — | 5 | 5 |
| 19 | 19 | — | 19 |
— = power 0: the prime is not a factor of this number; the LCM takes it from the number that has it.
LCM = 22 × 5 × 19 = 380
More with these numbers
Found an error in the calculation or the information?
Related Calculations
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
Share This Calculation
Print
<a href="https://calculat.io/en/number/least-common-multiple-lcm-of/19--20">What is the LCM of 19 and 20? - Calculatio</a>Facebook
Twitter
Telegram
WhatsApp
Viber
Email
