What is the Least Common Multiple of 15820 and 15828?

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 15820 and 15828 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15820 and 15828, than apply into the LCM equation.

GCF(15820,15828) = 4
LCM(15820,15828) = ( 15820 × 15828) / 4
LCM(15820,15828) = 250398960 / 4
LCM(15820,15828) = 62599740

Least Common Multiple (LCM) of 15820 and 15828 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15820 and 15828. First we will calculate the prime factors of 15820 and 15828.

Prime Factorization of 15820

Prime Factorization of 15828

Now multiplying the highest exponent prime factors to calculate the LCM of 15820 and 15828.

LCM(15820,15828) = 2² × 5¹ × 7¹ × 113¹ × 3¹ × 1319¹
LCM(15820,15828) = 62599740