What is the Least Common Multiple of 38920 and 38938?

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 38920 and 38938 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 38920 and 38938, than apply into the LCM equation.

GCF(38920,38938) = 2
LCM(38920,38938) = ( 38920 × 38938) / 2
LCM(38920,38938) = 1515466960 / 2
LCM(38920,38938) = 757733480

Least Common Multiple (LCM) of 38920 and 38938 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 38920 and 38938. First we will calculate the prime factors of 38920 and 38938.

Prime Factorization of 38920

Prime Factorization of 38938

Now multiplying the highest exponent prime factors to calculate the LCM of 38920 and 38938.

LCM(38920,38938) = 2³ × 5¹ × 7¹ × 139¹ × 19469¹
LCM(38920,38938) = 757733480