What is the Greatest Common Factor of 72840 and 72860?

Greatest common factor (GCF) of 72840 and 72860 is 20.

GCF(72840,72860) = 20

We will now calculate the prime factors of 72840 and 72860, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 72840 and 72860.

How to find the GCF of 72840 and 72860?

We will first find the prime factorization of 72840 and 72860. After we will calculate the factors of 72840 and 72860 and find the biggest common factor number .

Step-1: Prime Factorization of 72840

Prime factors of 72840 are 2, 3, 5, 607. Prime factorization of 72840 in exponential form is:

72840 = 2³ × 3¹ × 5¹ × 607¹

Step-2: Prime Factorization of 72860

Prime factors of 72860 are 2, 5, 3643. Prime factorization of 72860 in exponential form is:

72860 = 2² × 5¹ × 3643¹

Step-3: Factors of 72840

List of positive integer factors of 72840 that divides 72840 without a remainder.

1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 607, 1214, 1821, 2428, 3035, 3642, 4856, 6070, 7284, 9105, 12140, 14568, 18210, 24280, 36420

Step-4: Factors of 72860

List of positive integer factors of 72860 that divides 72840 without a remainder.

1, 2, 4, 5, 10, 20, 3643, 7286, 14572, 18215, 36430

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 72840 and 72860. The biggest common factor number is the GCF number.
So the greatest common factor 72840 and 72860 is 20.

Also check out the Least Common Multiple of 72840 and 72860