What is the Least Common Multiple of 28785 and 28790?

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 28785 and 28790 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 28785 and 28790, than apply into the LCM equation.

GCF(28785,28790) = 5
LCM(28785,28790) = ( 28785 × 28790) / 5
LCM(28785,28790) = 828720150 / 5
LCM(28785,28790) = 165744030

Least Common Multiple (LCM) of 28785 and 28790 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 28785 and 28790. First we will calculate the prime factors of 28785 and 28790.

Prime Factorization of 28785

Prime Factorization of 28790

Now multiplying the highest exponent prime factors to calculate the LCM of 28785 and 28790.

LCM(28785,28790) = 3¹ × 5¹ × 19¹ × 101¹ × 2¹ × 2879¹
LCM(28785,28790) = 165744030