What is the Least Common Multiple of 21916 and 21932?

Least common multiple or lowest common denominator (lcd) can be calculated in two way; with the LCM formula calculation of greatest common factor (GCF), or multiplying the prime factors with the highest exponent factor.

Least Common Multiple of 21916 and 21932 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21916 and 21932, than apply into the LCM equation.

GCF(21916,21932) = 4
LCM(21916,21932) = ( 21916 × 21932) / 4
LCM(21916,21932) = 480661712 / 4
LCM(21916,21932) = 120165428

Least Common Multiple (LCM) of 21916 and 21932 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21916 and 21932. First we will calculate the prime factors of 21916 and 21932.

Prime Factorization of 21916

Prime Factorization of 21932

Now multiplying the highest exponent prime factors to calculate the LCM of 21916 and 21932.

LCM(21916,21932) = 2² × 5479¹ × 5483¹
LCM(21916,21932) = 120165428