What is the Least Common Multiple of 89620 and 89640?

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 89620 and 89640 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 89620 and 89640, than apply into the LCM equation.

GCF(89620,89640) = 20
LCM(89620,89640) = ( 89620 × 89640) / 20
LCM(89620,89640) = 8033536800 / 20
LCM(89620,89640) = 401676840

Least Common Multiple (LCM) of 89620 and 89640 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 89620 and 89640. First we will calculate the prime factors of 89620 and 89640.

Prime Factorization of 89620

Prime Factorization of 89640

Now multiplying the highest exponent prime factors to calculate the LCM of 89620 and 89640.

LCM(89620,89640) = 2³ × 5¹ × 4481¹ × 3³ × 83¹
LCM(89620,89640) = 401676840