What is the Greatest Common Factor of 28285 and 28290?

Greatest common factor (GCF) of 28285 and 28290 is 5.

GCF(28285,28290) = 5

We will now calculate the prime factors of 28285 and 28290, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28285 and 28290.

How to find the GCF of 28285 and 28290?

We will first find the prime factorization of 28285 and 28290. After we will calculate the factors of 28285 and 28290 and find the biggest common factor number .

Step-1: Prime Factorization of 28285

Prime factors of 28285 are 5, 5657. Prime factorization of 28285 in exponential form is:

28285 = 5¹ × 5657¹

Step-2: Prime Factorization of 28290

Prime factors of 28290 are 2, 3, 5, 23, 41. Prime factorization of 28290 in exponential form is:

28290 = 2¹ × 3¹ × 5¹ × 23¹ × 41¹

Step-3: Factors of 28285

List of positive integer factors of 28285 that divides 28285 without a remainder.

1, 5, 5657

Step-4: Factors of 28290

List of positive integer factors of 28290 that divides 28285 without a remainder.

1, 2, 3, 5, 6, 10, 15, 23, 30, 41, 46, 69, 82, 115, 123, 138, 205, 230, 246, 345, 410, 615, 690, 943, 1230, 1886, 2829, 4715, 5658, 9430, 14145

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28285 and 28290. The biggest common factor number is the GCF number.
So the greatest common factor 28285 and 28290 is 5.

Also check out the Least Common Multiple of 28285 and 28290