Least Common Multiple (LCM) of 20 and 36
The least common multiple (LCM) of 20 and 36 is 180.
What is the Least Common Multiple (LCM)?
The LCM of two integers is the smallest positive integer that is divisible by both numbers. It is often used to find common denominators and solve problems involving periodic events.
Formula for LCM
The LCM of two numbers can be calculated using their GCD:
LCM(a, b) = |a × b| ÷ GCD(a, b)
How to Calculate the LCM of 20 and 36?
First, calculate the GCD of 20 and 36 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 20 ÷ 36 = 0 remainder 20 |
| 2 | 36 ÷ 20 = 1 remainder 16 |
| 3 | 20 ÷ 16 = 1 remainder 4 |
| 4 | 16 ÷ 4 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 115 and 137 | 15755 |
| 11 and 136 | 1496 |
| 32 and 200 | 800 |
| 47 and 154 | 7238 |
| 195 and 150 | 1950 |