What is the Least Common Multiple of 20421 and 20426?

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 20421 and 20426 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20421 and 20426, than apply into the LCM equation.

GCF(20421,20426) = 1
LCM(20421,20426) = ( 20421 × 20426) / 1
LCM(20421,20426) = 417119346 / 1
LCM(20421,20426) = 417119346

Least Common Multiple (LCM) of 20421 and 20426 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20421 and 20426. First we will calculate the prime factors of 20421 and 20426.

Prime Factorization of 20421

Prime Factorization of 20426

Now multiplying the highest exponent prime factors to calculate the LCM of 20421 and 20426.

LCM(20421,20426) = 3² × 2269¹ × 2¹ × 7¹ × 1459¹
LCM(20421,20426) = 417119346