What is the Greatest Common Factor of 40720 and 40728?

Greatest common factor (GCF) of 40720 and 40728 is 8.

GCF(40720,40728) = 8

We will now calculate the prime factors of 40720 and 40728, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 40720 and 40728.

How to find the GCF of 40720 and 40728?

We will first find the prime factorization of 40720 and 40728. After we will calculate the factors of 40720 and 40728 and find the biggest common factor number .

Step-1: Prime Factorization of 40720

Prime factors of 40720 are 2, 5, 509. Prime factorization of 40720 in exponential form is:

40720 = 2⁴ × 5¹ × 509¹

Step-2: Prime Factorization of 40728

Prime factors of 40728 are 2, 3, 1697. Prime factorization of 40728 in exponential form is:

40728 = 2³ × 3¹ × 1697¹

Step-3: Factors of 40720

List of positive integer factors of 40720 that divides 40720 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 509, 1018, 2036, 2545, 4072, 5090, 8144, 10180, 20360

Step-4: Factors of 40728

List of positive integer factors of 40728 that divides 40720 without a remainder.

1, 2, 3, 4, 6, 8, 12, 24, 1697, 3394, 5091, 6788, 10182, 13576, 20364

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 40720 and 40728. The biggest common factor number is the GCF number.
So the greatest common factor 40720 and 40728 is 8.

Also check out the Least Common Multiple of 40720 and 40728