What is the Greatest Common Factor of 30780 and 30790?

Greatest common factor (GCF) of 30780 and 30790 is 10.

GCF(30780,30790) = 10

We will now calculate the prime factors of 30780 and 30790, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 30780 and 30790.

How to find the GCF of 30780 and 30790?

We will first find the prime factorization of 30780 and 30790. After we will calculate the factors of 30780 and 30790 and find the biggest common factor number .

Step-1: Prime Factorization of 30780

Prime factors of 30780 are 2, 3, 5, 19. Prime factorization of 30780 in exponential form is:

30780 = 2² × 3⁴ × 5¹ × 19¹

Step-2: Prime Factorization of 30790

Prime factors of 30790 are 2, 5, 3079. Prime factorization of 30790 in exponential form is:

30790 = 2¹ × 5¹ × 3079¹

Step-3: Factors of 30780

List of positive integer factors of 30780 that divides 30780 without a remainder.

1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 38, 45, 54, 57, 60, 76, 81, 90, 95, 108, 114, 135, 162, 171, 180, 190, 228, 270, 285, 324, 342, 380, 405, 513, 540, 570, 684, 810, 855, 1026, 1140, 1539, 1620, 1710, 2052, 2565, 3078, 3420, 5130, 6156, 7695, 10260, 15390

Step-4: Factors of 30790

List of positive integer factors of 30790 that divides 30780 without a remainder.

1, 2, 5, 10, 3079, 6158, 15395

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 30780 and 30790. The biggest common factor number is the GCF number.
So the greatest common factor 30780 and 30790 is 10.

Also check out the Least Common Multiple of 30780 and 30790