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What is the Least Common Multiple of 38420 and 38439?

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 (LCM) of 38420 and 38439 is 1476826380.

LCM(38420,38439) = 1476826380

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Least Common Multiple of 38420 and 38439 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 38420 and 38439, than apply into the LCM equation.

GCF(38420,38439) = 1
LCM(38420,38439) = ( 38420 × 38439) / 1
LCM(38420,38439) = 1476826380 / 1
LCM(38420,38439) = 1476826380

Least Common Multiple (LCM) of 38420 and 38439 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 38420 and 38439. First we will calculate the prime factors of 38420 and 38439.

Prime Factorization of 38420

Prime factors of 38420 are 2, 5, 17, 113. Prime factorization of 38420 in exponential form is:

38420 = 22 × 51 × 171 × 1131

Prime Factorization of 38439

Prime factors of 38439 are 3, 4271. Prime factorization of 38439 in exponential form is:

38439 = 32 × 42711

Now multiplying the highest exponent prime factors to calculate the LCM of 38420 and 38439.

LCM(38420,38439) = 22 × 51 × 171 × 1131 × 32 × 42711
LCM(38420,38439) = 1476826380