What is the Greatest Common Factor of 20615 and 20630?

Greatest common factor (GCF) of 20615 and 20630 is 5.

GCF(20615,20630) = 5

We will now calculate the prime factors of 20615 and 20630, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20615 and 20630.

How to find the GCF of 20615 and 20630?

We will first find the prime factorization of 20615 and 20630. After we will calculate the factors of 20615 and 20630 and find the biggest common factor number .

Step-1: Prime Factorization of 20615

Prime factors of 20615 are 5, 7, 19, 31. Prime factorization of 20615 in exponential form is:

20615 = 5¹ × 7¹ × 19¹ × 31¹

Step-2: Prime Factorization of 20630

Prime factors of 20630 are 2, 5, 2063. Prime factorization of 20630 in exponential form is:

20630 = 2¹ × 5¹ × 2063¹

Step-3: Factors of 20615

List of positive integer factors of 20615 that divides 20615 without a remainder.

1, 5, 7, 19, 31, 35, 95, 133, 155, 217, 589, 665, 1085, 2945, 4123

Step-4: Factors of 20630

List of positive integer factors of 20630 that divides 20615 without a remainder.

1, 2, 5, 10, 2063, 4126, 10315

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20615 and 20630. The biggest common factor number is the GCF number.
So the greatest common factor 20615 and 20630 is 5.

Also check out the Least Common Multiple of 20615 and 20630