What is the Least Common Multiple of 40220 and 40240?

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 40220 and 40240 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 40220 and 40240, than apply into the LCM equation.

GCF(40220,40240) = 20
LCM(40220,40240) = ( 40220 × 40240) / 20
LCM(40220,40240) = 1618452800 / 20
LCM(40220,40240) = 80922640

Least Common Multiple (LCM) of 40220 and 40240 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 40220 and 40240. First we will calculate the prime factors of 40220 and 40240.

Prime Factorization of 40220

Prime Factorization of 40240

Now multiplying the highest exponent prime factors to calculate the LCM of 40220 and 40240.

LCM(40220,40240) = 2⁴ × 5¹ × 2011¹ × 503¹
LCM(40220,40240) = 80922640