What is the Least Common Multiple of 38720 and 38731?

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 38720 and 38731 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 38720 and 38731, than apply into the LCM equation.

GCF(38720,38731) = 11
LCM(38720,38731) = ( 38720 × 38731) / 11
LCM(38720,38731) = 1499664320 / 11
LCM(38720,38731) = 136333120

Least Common Multiple (LCM) of 38720 and 38731 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 38720 and 38731. First we will calculate the prime factors of 38720 and 38731.

Prime Factorization of 38720

Prime Factorization of 38731

Now multiplying the highest exponent prime factors to calculate the LCM of 38720 and 38731.

LCM(38720,38731) = 2⁶ × 5¹ × 11² × 7¹ × 503¹
LCM(38720,38731) = 136333120