What is the Least Common Multiple of 39815 and 39830?

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 39815 and 39830 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 39815 and 39830, than apply into the LCM equation.

GCF(39815,39830) = 5
LCM(39815,39830) = ( 39815 × 39830) / 5
LCM(39815,39830) = 1585831450 / 5
LCM(39815,39830) = 317166290

Least Common Multiple (LCM) of 39815 and 39830 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 39815 and 39830. First we will calculate the prime factors of 39815 and 39830.

Prime Factorization of 39815

Prime Factorization of 39830

Now multiplying the highest exponent prime factors to calculate the LCM of 39815 and 39830.

LCM(39815,39830) = 5¹ × 7963¹ × 2¹ × 7¹ × 569¹
LCM(39815,39830) = 317166290