What is the Least Common Multiple of 19821 and 19827?

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 19821 and 19827 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 19821 and 19827, than apply into the LCM equation.

GCF(19821,19827) = 3
LCM(19821,19827) = ( 19821 × 19827) / 3
LCM(19821,19827) = 392990967 / 3
LCM(19821,19827) = 130996989

Least Common Multiple (LCM) of 19821 and 19827 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 19821 and 19827. First we will calculate the prime factors of 19821 and 19827.

Prime Factorization of 19821

Prime Factorization of 19827

Now multiplying the highest exponent prime factors to calculate the LCM of 19821 and 19827.

LCM(19821,19827) = 3² × 6607¹ × 2203¹
LCM(19821,19827) = 130996989