What is the Least Common Multiple of 28638 and 28644?

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 28638 and 28644 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 28638 and 28644, than apply into the LCM equation.

GCF(28638,28644) = 6
LCM(28638,28644) = ( 28638 × 28644) / 6
LCM(28638,28644) = 820306872 / 6
LCM(28638,28644) = 136717812

Least Common Multiple (LCM) of 28638 and 28644 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 28638 and 28644. First we will calculate the prime factors of 28638 and 28644.

Prime Factorization of 28638

Prime Factorization of 28644

Now multiplying the highest exponent prime factors to calculate the LCM of 28638 and 28644.

LCM(28638,28644) = 2² × 3² × 37¹ × 43¹ × 7¹ × 11¹ × 31¹
LCM(28638,28644) = 136717812