What is the Least Common Multiple of 13820 and 13836?

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 13820 and 13836 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 13820 and 13836, than apply into the LCM equation.

GCF(13820,13836) = 4
LCM(13820,13836) = ( 13820 × 13836) / 4
LCM(13820,13836) = 191213520 / 4
LCM(13820,13836) = 47803380

Least Common Multiple (LCM) of 13820 and 13836 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 13820 and 13836. First we will calculate the prime factors of 13820 and 13836.

Prime Factorization of 13820

Prime Factorization of 13836

Now multiplying the highest exponent prime factors to calculate the LCM of 13820 and 13836.

LCM(13820,13836) = 2² × 5¹ × 691¹ × 3¹ × 1153¹
LCM(13820,13836) = 47803380