What is the Least Common Multiple of 26405 and 26420?

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 26405 and 26420 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 26405 and 26420, than apply into the LCM equation.

GCF(26405,26420) = 5
LCM(26405,26420) = ( 26405 × 26420) / 5
LCM(26405,26420) = 697620100 / 5
LCM(26405,26420) = 139524020

Least Common Multiple (LCM) of 26405 and 26420 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 26405 and 26420. First we will calculate the prime factors of 26405 and 26420.

Prime Factorization of 26405

Prime Factorization of 26420

Now multiplying the highest exponent prime factors to calculate the LCM of 26405 and 26420.

LCM(26405,26420) = 5¹ × 5281¹ × 2² × 1321¹
LCM(26405,26420) = 139524020