What is the Least Common Multiple of 39615 and 39620?

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 39615 and 39620 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 39615 and 39620, than apply into the LCM equation.

GCF(39615,39620) = 5
LCM(39615,39620) = ( 39615 × 39620) / 5
LCM(39615,39620) = 1569546300 / 5
LCM(39615,39620) = 313909260

Least Common Multiple (LCM) of 39615 and 39620 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 39615 and 39620. First we will calculate the prime factors of 39615 and 39620.

Prime Factorization of 39615

Prime Factorization of 39620

Now multiplying the highest exponent prime factors to calculate the LCM of 39615 and 39620.

LCM(39615,39620) = 3¹ × 5¹ × 19¹ × 139¹ × 2² × 7¹ × 283¹
LCM(39615,39620) = 313909260