What is the Greatest Common Factor of 486 and 490?

Greatest common factor (GCF) of 486 and 490 is 2.

GCF(486,490) = 2

We will now calculate the prime factors of 486 and 490, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 486 and 490.

How to find the GCF of 486 and 490?

We will first find the prime factorization of 486 and 490. After we will calculate the factors of 486 and 490 and find the biggest common factor number .

Step-1: Prime Factorization of 486

Prime factors of 486 are 2, 3. Prime factorization of 486 in exponential form is:

486 = 2¹ × 3⁵

Step-2: Prime Factorization of 490

Prime factors of 490 are 2, 5, 7. Prime factorization of 490 in exponential form is:

490 = 2¹ × 5¹ × 7²

Step-3: Factors of 486

List of positive integer factors of 486 that divides 486 without a remainder.

1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 243

Step-4: Factors of 490

List of positive integer factors of 490 that divides 486 without a remainder.

1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 486 and 490. The biggest common factor number is the GCF number.
So the greatest common factor 486 and 490 is 2.

Also check out the Least Common Multiple of 486 and 490