What is the Greatest Common Factor of 15780 and 15790?

Greatest common factor (GCF) of 15780 and 15790 is 10.

GCF(15780,15790) = 10

We will now calculate the prime factors of 15780 and 15790, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15780 and 15790.

How to find the GCF of 15780 and 15790?

We will first find the prime factorization of 15780 and 15790. After we will calculate the factors of 15780 and 15790 and find the biggest common factor number .

Step-1: Prime Factorization of 15780

Prime factors of 15780 are 2, 3, 5, 263. Prime factorization of 15780 in exponential form is:

15780 = 2² × 3¹ × 5¹ × 263¹

Step-2: Prime Factorization of 15790

Prime factors of 15790 are 2, 5, 1579. Prime factorization of 15790 in exponential form is:

15790 = 2¹ × 5¹ × 1579¹

Step-3: Factors of 15780

List of positive integer factors of 15780 that divides 15780 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 263, 526, 789, 1052, 1315, 1578, 2630, 3156, 3945, 5260, 7890

Step-4: Factors of 15790

List of positive integer factors of 15790 that divides 15780 without a remainder.

1, 2, 5, 10, 1579, 3158, 7895

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15780 and 15790. The biggest common factor number is the GCF number.
So the greatest common factor 15780 and 15790 is 10.

Also check out the Least Common Multiple of 15780 and 15790