What is the LCM of 720 and 1620?
The LCM of 720 and 1620 is 6480.
Steps to find LCM
- Find the prime factorization of 720
720 = 2 × 2 × 2 × 2 × 3 × 3 × 5 - Find the prime factorization of 1620
1620 = 2 × 2 × 3 × 3 × 3 × 3 × 5 - Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:
LCM = 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 5 - LCM = 6480
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: 1440 & 3240 360 & 810 2160 & 4860 240 & 540 3600 & 8100 144 & 324 1440 & 1620 720 & 3240 2160 & 1620 720 & 4860 3600 & 1620 720 & 8100 5040 & 1620
LCM Calculator
Enter two numbers separate by comma. To find least common multiple (LCM) of more than two numbers, click here.