What is the Least Common Multiple of 19641 and 19646?

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 19641 and 19646 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 19641 and 19646, than apply into the LCM equation.

GCF(19641,19646) = 1
LCM(19641,19646) = ( 19641 × 19646) / 1
LCM(19641,19646) = 385867086 / 1
LCM(19641,19646) = 385867086

Least Common Multiple (LCM) of 19641 and 19646 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 19641 and 19646. First we will calculate the prime factors of 19641 and 19646.

Prime Factorization of 19641

Prime Factorization of 19646

Now multiplying the highest exponent prime factors to calculate the LCM of 19641 and 19646.

LCM(19641,19646) = 3¹ × 6547¹ × 2¹ × 11¹ × 19¹ × 47¹
LCM(19641,19646) = 385867086