What is the Least Common Multiple of 39890 and 39906?

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 39890 and 39906 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 39890 and 39906, than apply into the LCM equation.

GCF(39890,39906) = 2
LCM(39890,39906) = ( 39890 × 39906) / 2
LCM(39890,39906) = 1591850340 / 2
LCM(39890,39906) = 795925170

Least Common Multiple (LCM) of 39890 and 39906 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 39890 and 39906. First we will calculate the prime factors of 39890 and 39906.

Prime Factorization of 39890

Prime Factorization of 39906

Now multiplying the highest exponent prime factors to calculate the LCM of 39890 and 39906.

LCM(39890,39906) = 2¹ × 5¹ × 3989¹ × 3³ × 739¹
LCM(39890,39906) = 795925170