What is the Least Common Multiple of 28372 and 28390?

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 28372 and 28390 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 28372 and 28390, than apply into the LCM equation.

GCF(28372,28390) = 2
LCM(28372,28390) = ( 28372 × 28390) / 2
LCM(28372,28390) = 805481080 / 2
LCM(28372,28390) = 402740540

Least Common Multiple (LCM) of 28372 and 28390 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 28372 and 28390. First we will calculate the prime factors of 28372 and 28390.

Prime Factorization of 28372

Prime Factorization of 28390

Now multiplying the highest exponent prime factors to calculate the LCM of 28372 and 28390.

LCM(28372,28390) = 2² × 41¹ × 173¹ × 5¹ × 17¹ × 167¹
LCM(28372,28390) = 402740540