What is the Least Common Multiple of 20728 and 20747?

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 20728 and 20747 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20728 and 20747, than apply into the LCM equation.

GCF(20728,20747) = 1
LCM(20728,20747) = ( 20728 × 20747) / 1
LCM(20728,20747) = 430043816 / 1
LCM(20728,20747) = 430043816

Least Common Multiple (LCM) of 20728 and 20747 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20728 and 20747. First we will calculate the prime factors of 20728 and 20747.

Prime Factorization of 20728

Prime Factorization of 20747

Now multiplying the highest exponent prime factors to calculate the LCM of 20728 and 20747.

LCM(20728,20747) = 2³ × 2591¹ × 20747¹
LCM(20728,20747) = 430043816