What is the Least Common Multiple of 20940 and 20946?

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 20940 and 20946 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20940 and 20946, than apply into the LCM equation.

GCF(20940,20946) = 6
LCM(20940,20946) = ( 20940 × 20946) / 6
LCM(20940,20946) = 438609240 / 6
LCM(20940,20946) = 73101540

Least Common Multiple (LCM) of 20940 and 20946 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20940 and 20946. First we will calculate the prime factors of 20940 and 20946.

Prime Factorization of 20940

Prime Factorization of 20946

Now multiplying the highest exponent prime factors to calculate the LCM of 20940 and 20946.

LCM(20940,20946) = 2² × 3¹ × 5¹ × 349¹ × 3491¹
LCM(20940,20946) = 73101540