What is the Least Common Multiple of 20976 and 20981?

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 20976 and 20981 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20976 and 20981, than apply into the LCM equation.

GCF(20976,20981) = 1
LCM(20976,20981) = ( 20976 × 20981) / 1
LCM(20976,20981) = 440097456 / 1
LCM(20976,20981) = 440097456

Least Common Multiple (LCM) of 20976 and 20981 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20976 and 20981. First we will calculate the prime factors of 20976 and 20981.

Prime Factorization of 20976

Prime Factorization of 20981

Now multiplying the highest exponent prime factors to calculate the LCM of 20976 and 20981.

LCM(20976,20981) = 2⁴ × 3¹ × 19¹ × 23¹ × 20981¹
LCM(20976,20981) = 440097456