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What is the Least Common Multiple of 28300 and 28320?

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 28300 and 28320 is 40072800.

LCM(28300,28320) = 40072800

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Least Common Multiple of 28300 and 28320 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 28300 and 28320, than apply into the LCM equation.

GCF(28300,28320) = 20
LCM(28300,28320) = ( 28300 × 28320) / 20
LCM(28300,28320) = 801456000 / 20
LCM(28300,28320) = 40072800

Least Common Multiple (LCM) of 28300 and 28320 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 28300 and 28320. First we will calculate the prime factors of 28300 and 28320.

Prime Factorization of 28300

Prime factors of 28300 are 2, 5, 283. Prime factorization of 28300 in exponential form is:

28300 = 22 × 52 × 2831

Prime Factorization of 28320

Prime factors of 28320 are 2, 3, 5, 59. Prime factorization of 28320 in exponential form is:

28320 = 25 × 31 × 51 × 591

Now multiplying the highest exponent prime factors to calculate the LCM of 28300 and 28320.

LCM(28300,28320) = 25 × 52 × 2831 × 31 × 591
LCM(28300,28320) = 40072800