What is the Greatest Common Factor of 28478 and 28490?

Greatest common factor (GCF) of 28478 and 28490 is 2.

GCF(28478,28490) = 2

We will now calculate the prime factors of 28478 and 28490, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28478 and 28490.

How to find the GCF of 28478 and 28490?

We will first find the prime factorization of 28478 and 28490. After we will calculate the factors of 28478 and 28490 and find the biggest common factor number .

Step-1: Prime Factorization of 28478

Prime factors of 28478 are 2, 29, 491. Prime factorization of 28478 in exponential form is:

28478 = 2¹ × 29¹ × 491¹

Step-2: Prime Factorization of 28490

Prime factors of 28490 are 2, 5, 7, 11, 37. Prime factorization of 28490 in exponential form is:

28490 = 2¹ × 5¹ × 7¹ × 11¹ × 37¹

Step-3: Factors of 28478

List of positive integer factors of 28478 that divides 28478 without a remainder.

1, 2, 29, 58, 491, 982, 14239

Step-4: Factors of 28490

List of positive integer factors of 28490 that divides 28478 without a remainder.

1, 2, 5, 7, 10, 11, 14, 22, 35, 37, 55, 70, 74, 77, 110, 154, 185, 259, 370, 385, 407, 518, 770, 814, 1295, 2035, 2590, 2849, 4070, 5698, 14245

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28478 and 28490. The biggest common factor number is the GCF number.
So the greatest common factor 28478 and 28490 is 2.

Also check out the Least Common Multiple of 28478 and 28490