What is the Least Common Multiple of 13620 and 13636?

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 13620 and 13636 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 13620 and 13636, than apply into the LCM equation.

GCF(13620,13636) = 4
LCM(13620,13636) = ( 13620 × 13636) / 4
LCM(13620,13636) = 185722320 / 4
LCM(13620,13636) = 46430580

Least Common Multiple (LCM) of 13620 and 13636 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 13620 and 13636. First we will calculate the prime factors of 13620 and 13636.

Prime Factorization of 13620

Prime Factorization of 13636

Now multiplying the highest exponent prime factors to calculate the LCM of 13620 and 13636.

LCM(13620,13636) = 2² × 3¹ × 5¹ × 227¹ × 7¹ × 487¹
LCM(13620,13636) = 46430580