What is the Least Common Multiple of 20440 and 20452?

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 20440 and 20452 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20440 and 20452, than apply into the LCM equation.

GCF(20440,20452) = 4
LCM(20440,20452) = ( 20440 × 20452) / 4
LCM(20440,20452) = 418038880 / 4
LCM(20440,20452) = 104509720

Least Common Multiple (LCM) of 20440 and 20452 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20440 and 20452. First we will calculate the prime factors of 20440 and 20452.

Prime Factorization of 20440

Prime Factorization of 20452

Now multiplying the highest exponent prime factors to calculate the LCM of 20440 and 20452.

LCM(20440,20452) = 2³ × 5¹ × 7¹ × 73¹ × 5113¹
LCM(20440,20452) = 104509720