What is the Least Common Multiple of 28615 and 28620?

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 28615 and 28620 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 28615 and 28620, than apply into the LCM equation.

GCF(28615,28620) = 5
LCM(28615,28620) = ( 28615 × 28620) / 5
LCM(28615,28620) = 818961300 / 5
LCM(28615,28620) = 163792260

Least Common Multiple (LCM) of 28615 and 28620 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 28615 and 28620. First we will calculate the prime factors of 28615 and 28620.

Prime Factorization of 28615

Prime Factorization of 28620

Now multiplying the highest exponent prime factors to calculate the LCM of 28615 and 28620.

LCM(28615,28620) = 5¹ × 59¹ × 97¹ × 2² × 3³ × 53¹
LCM(28615,28620) = 163792260