What is the Least Common Multiple of 16220 and 16240?

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 16220 and 16240 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 16220 and 16240, than apply into the LCM equation.

GCF(16220,16240) = 20
LCM(16220,16240) = ( 16220 × 16240) / 20
LCM(16220,16240) = 263412800 / 20
LCM(16220,16240) = 13170640

Least Common Multiple (LCM) of 16220 and 16240 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 16220 and 16240. First we will calculate the prime factors of 16220 and 16240.

Prime Factorization of 16220

Prime Factorization of 16240

Now multiplying the highest exponent prime factors to calculate the LCM of 16220 and 16240.

LCM(16220,16240) = 2⁴ × 5¹ × 811¹ × 7¹ × 29¹
LCM(16220,16240) = 13170640