What is the Least Common Multiple of 19760 and 19765?

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 19760 and 19765 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 19760 and 19765, than apply into the LCM equation.

GCF(19760,19765) = 5
LCM(19760,19765) = ( 19760 × 19765) / 5
LCM(19760,19765) = 390556400 / 5
LCM(19760,19765) = 78111280

Least Common Multiple (LCM) of 19760 and 19765 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 19760 and 19765. First we will calculate the prime factors of 19760 and 19765.

Prime Factorization of 19760

Prime Factorization of 19765

Now multiplying the highest exponent prime factors to calculate the LCM of 19760 and 19765.

LCM(19760,19765) = 2⁴ × 5¹ × 13¹ × 19¹ × 59¹ × 67¹
LCM(19760,19765) = 78111280