What is the Least Common Multiple of 20686 and 20693?

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 20686 and 20693 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20686 and 20693, than apply into the LCM equation.

GCF(20686,20693) = 1
LCM(20686,20693) = ( 20686 × 20693) / 1
LCM(20686,20693) = 428055398 / 1
LCM(20686,20693) = 428055398

Least Common Multiple (LCM) of 20686 and 20693 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20686 and 20693. First we will calculate the prime factors of 20686 and 20693.

Prime Factorization of 20686

Prime Factorization of 20693

Now multiplying the highest exponent prime factors to calculate the LCM of 20686 and 20693.

LCM(20686,20693) = 2¹ × 10343¹ × 20693¹
LCM(20686,20693) = 428055398