What is the Least Common Multiple of 20784 and 20798?

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 20784 and 20798 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20784 and 20798, than apply into the LCM equation.

GCF(20784,20798) = 2
LCM(20784,20798) = ( 20784 × 20798) / 2
LCM(20784,20798) = 432265632 / 2
LCM(20784,20798) = 216132816

Least Common Multiple (LCM) of 20784 and 20798 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20784 and 20798. First we will calculate the prime factors of 20784 and 20798.

Prime Factorization of 20784

Prime Factorization of 20798

Now multiplying the highest exponent prime factors to calculate the LCM of 20784 and 20798.

LCM(20784,20798) = 2⁴ × 3¹ × 433¹ × 10399¹
LCM(20784,20798) = 216132816