What is the LCM of 20 and 87?
The LCM of 20 and 87 is 1740.
Steps to find LCM
- Find the prime factorization of 20
20 = 2 × 2 × 5 - Find the prime factorization of 87
87 = 3 × 29 - Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:
LCM = 2 × 2 × 3 × 5 × 29 - LCM = 1740
MathStep (Works offline)
Download our mobile app and learn how to find LCM of upto four numbers in your own time:
Android and iPhone/ iPad
Find least common multiple (LCM) of: 40 & 174 60 & 261 100 & 435 140 & 609 40 & 87 20 & 174 60 & 87 20 & 261 100 & 87 20 & 435 140 & 87 20 & 609
LCM Calculator
Enter two numbers separate by comma. To find least common multiple (LCM) of more than two numbers, click here.