LCM of 5 and 20

What is the LCM of 5 and 20? - The LCM of 5 and 20 is 20. Follow the step by step instructions on how to find the least common multiple of 5 and 20.

What is the least common multiple of 5 and 20?

How to find the lcm of 5 and 20?

To find the lcm of 5 and 20, we first need to find the multiples of 5 and 20 and then choose the least common multiple that are dividable by 5 and 20.

Multiples of 5 = 5, 10, 15, 20
Multiples of 20 = 20

The least common multiple of 5 and 20 is 20, because 20 is the smallest number that is divisible by both 5 and 20.

Another method to find the least common multiple of 5 and 20 is by using the prime factorization method.
To use prime factorization, we first need to find the prime factors of 5 and 20, and then get the LCM by multiplying the prime factors that are rasied to their highest power from the two sets.

Prime factorization of 5 = 5
Prime factorization of 20 = 2 x 2 x 5 = 2² x 5
Prime factors to the highest power = 2² x 5 = 20