What is the Least Common Multiple of 20209 and 20216?

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 20209 and 20216 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20209 and 20216, than apply into the LCM equation.

GCF(20209,20216) = 7
LCM(20209,20216) = ( 20209 × 20216) / 7
LCM(20209,20216) = 408545144 / 7
LCM(20209,20216) = 58363592

Least Common Multiple (LCM) of 20209 and 20216 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20209 and 20216. First we will calculate the prime factors of 20209 and 20216.

Prime Factorization of 20209

Prime Factorization of 20216

Now multiplying the highest exponent prime factors to calculate the LCM of 20209 and 20216.

LCM(20209,20216) = 7¹ × 2887¹ × 2³ × 19²
LCM(20209,20216) = 58363592