What is the Least Common Multiple of 20740 and 20755?

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 20740 and 20755 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20740 and 20755, than apply into the LCM equation.

GCF(20740,20755) = 5
LCM(20740,20755) = ( 20740 × 20755) / 5
LCM(20740,20755) = 430458700 / 5
LCM(20740,20755) = 86091740

Least Common Multiple (LCM) of 20740 and 20755 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20740 and 20755. First we will calculate the prime factors of 20740 and 20755.

Prime Factorization of 20740

Prime Factorization of 20755

Now multiplying the highest exponent prime factors to calculate the LCM of 20740 and 20755.

LCM(20740,20755) = 2² × 5¹ × 17¹ × 61¹ × 7¹ × 593¹
LCM(20740,20755) = 86091740