What is the Least Common Multiple of 27620 and 27640?

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 27620 and 27640 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 27620 and 27640, than apply into the LCM equation.

GCF(27620,27640) = 20
LCM(27620,27640) = ( 27620 × 27640) / 20
LCM(27620,27640) = 763416800 / 20
LCM(27620,27640) = 38170840

Least Common Multiple (LCM) of 27620 and 27640 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 27620 and 27640. First we will calculate the prime factors of 27620 and 27640.

Prime Factorization of 27620

Prime Factorization of 27640

Now multiplying the highest exponent prime factors to calculate the LCM of 27620 and 27640.

LCM(27620,27640) = 2³ × 5¹ × 1381¹ × 691¹
LCM(27620,27640) = 38170840