What is the Least Common Multiple of 39646 and 39664?

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 39646 and 39664 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 39646 and 39664, than apply into the LCM equation.

GCF(39646,39664) = 2
LCM(39646,39664) = ( 39646 × 39664) / 2
LCM(39646,39664) = 1572518944 / 2
LCM(39646,39664) = 786259472

Least Common Multiple (LCM) of 39646 and 39664 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 39646 and 39664. First we will calculate the prime factors of 39646 and 39664.

Prime Factorization of 39646

Prime Factorization of 39664

Now multiplying the highest exponent prime factors to calculate the LCM of 39646 and 39664.

LCM(39646,39664) = 2⁴ × 43¹ × 461¹ × 37¹ × 67¹
LCM(39646,39664) = 786259472