What is the Least Common Multiple of 38960 and 38980?

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 38960 and 38980 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 38960 and 38980, than apply into the LCM equation.

GCF(38960,38980) = 20
LCM(38960,38980) = ( 38960 × 38980) / 20
LCM(38960,38980) = 1518660800 / 20
LCM(38960,38980) = 75933040

Least Common Multiple (LCM) of 38960 and 38980 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 38960 and 38980. First we will calculate the prime factors of 38960 and 38980.

Prime Factorization of 38960

Prime Factorization of 38980

Now multiplying the highest exponent prime factors to calculate the LCM of 38960 and 38980.

LCM(38960,38980) = 2⁴ × 5¹ × 487¹ × 1949¹
LCM(38960,38980) = 75933040