What is the Least Common Multiple of 20644 and 20664?

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 20644 and 20664 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20644 and 20664, than apply into the LCM equation.

GCF(20644,20664) = 4
LCM(20644,20664) = ( 20644 × 20664) / 4
LCM(20644,20664) = 426587616 / 4
LCM(20644,20664) = 106646904

Least Common Multiple (LCM) of 20644 and 20664 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20644 and 20664. First we will calculate the prime factors of 20644 and 20664.

Prime Factorization of 20644

Prime Factorization of 20664

Now multiplying the highest exponent prime factors to calculate the LCM of 20644 and 20664.

LCM(20644,20664) = 2³ × 13¹ × 397¹ × 3² × 7¹ × 41¹
LCM(20644,20664) = 106646904