What is the Least Common Multiple of 20240 and 20254?

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 20240 and 20254 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20240 and 20254, than apply into the LCM equation.

GCF(20240,20254) = 2
LCM(20240,20254) = ( 20240 × 20254) / 2
LCM(20240,20254) = 409940960 / 2
LCM(20240,20254) = 204970480

Least Common Multiple (LCM) of 20240 and 20254 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20240 and 20254. First we will calculate the prime factors of 20240 and 20254.

Prime Factorization of 20240

Prime Factorization of 20254

Now multiplying the highest exponent prime factors to calculate the LCM of 20240 and 20254.

LCM(20240,20254) = 2⁴ × 5¹ × 11¹ × 23¹ × 13¹ × 19¹ × 41¹
LCM(20240,20254) = 204970480