What is the Least Common Multiple of 17820 and 17838?

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 17820 and 17838 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 17820 and 17838, than apply into the LCM equation.

GCF(17820,17838) = 18
LCM(17820,17838) = ( 17820 × 17838) / 18
LCM(17820,17838) = 317873160 / 18
LCM(17820,17838) = 17659620

Least Common Multiple (LCM) of 17820 and 17838 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 17820 and 17838. First we will calculate the prime factors of 17820 and 17838.

Prime Factorization of 17820

Prime Factorization of 17838

Now multiplying the highest exponent prime factors to calculate the LCM of 17820 and 17838.

LCM(17820,17838) = 2² × 3⁴ × 5¹ × 11¹ × 991¹
LCM(17820,17838) = 17659620