What is the Least Common Multiple of 28765 and 28780?

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 28765 and 28780 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 28765 and 28780, than apply into the LCM equation.

GCF(28765,28780) = 5
LCM(28765,28780) = ( 28765 × 28780) / 5
LCM(28765,28780) = 827856700 / 5
LCM(28765,28780) = 165571340

Least Common Multiple (LCM) of 28765 and 28780 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 28765 and 28780. First we will calculate the prime factors of 28765 and 28780.

Prime Factorization of 28765

Prime Factorization of 28780

Now multiplying the highest exponent prime factors to calculate the LCM of 28765 and 28780.

LCM(28765,28780) = 5¹ × 11¹ × 523¹ × 2² × 1439¹
LCM(28765,28780) = 165571340