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What is the Least Common Multiple of 16806 and 16820?

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 16806 and 16820 is 141338460.

LCM(16806,16820) = 141338460

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Least Common Multiple of 16806 and 16820 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 16806 and 16820, than apply into the LCM equation.

GCF(16806,16820) = 2
LCM(16806,16820) = ( 16806 × 16820) / 2
LCM(16806,16820) = 282676920 / 2
LCM(16806,16820) = 141338460

Least Common Multiple (LCM) of 16806 and 16820 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 16806 and 16820. First we will calculate the prime factors of 16806 and 16820.

Prime Factorization of 16806

Prime factors of 16806 are 2, 3, 2801. Prime factorization of 16806 in exponential form is:

16806 = 21 × 31 × 28011

Prime Factorization of 16820

Prime factors of 16820 are 2, 5, 29. Prime factorization of 16820 in exponential form is:

16820 = 22 × 51 × 292

Now multiplying the highest exponent prime factors to calculate the LCM of 16806 and 16820.

LCM(16806,16820) = 22 × 31 × 28011 × 51 × 292
LCM(16806,16820) = 141338460