What is the Least Common Multiple of 22320 and 22338?

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 22320 and 22338 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 22320 and 22338, than apply into the LCM equation.

GCF(22320,22338) = 18
LCM(22320,22338) = ( 22320 × 22338) / 18
LCM(22320,22338) = 498584160 / 18
LCM(22320,22338) = 27699120

Least Common Multiple (LCM) of 22320 and 22338 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 22320 and 22338. First we will calculate the prime factors of 22320 and 22338.

Prime Factorization of 22320

Prime Factorization of 22338

Now multiplying the highest exponent prime factors to calculate the LCM of 22320 and 22338.

LCM(22320,22338) = 2⁴ × 3² × 5¹ × 31¹ × 17¹ × 73¹
LCM(22320,22338) = 27699120