What is the Greatest Common Factor of 31220 and 31225?

Greatest common factor (GCF) of 31220 and 31225 is 5.

GCF(31220,31225) = 5

We will now calculate the prime factors of 31220 and 31225, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 31220 and 31225.

How to find the GCF of 31220 and 31225?

We will first find the prime factorization of 31220 and 31225. After we will calculate the factors of 31220 and 31225 and find the biggest common factor number .

Step-1: Prime Factorization of 31220

Prime factors of 31220 are 2, 5, 7, 223. Prime factorization of 31220 in exponential form is:

31220 = 2² × 5¹ × 7¹ × 223¹

Step-2: Prime Factorization of 31225

Prime factors of 31225 are 5, 1249. Prime factorization of 31225 in exponential form is:

31225 = 5² × 1249¹

Step-3: Factors of 31220

List of positive integer factors of 31220 that divides 31220 without a remainder.

1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 223, 446, 892, 1115, 1561, 2230, 3122, 4460, 6244, 7805, 15610

Step-4: Factors of 31225

List of positive integer factors of 31225 that divides 31220 without a remainder.

1, 5, 25, 1249, 6245

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 31220 and 31225. The biggest common factor number is the GCF number.
So the greatest common factor 31220 and 31225 is 5.

Also check out the Least Common Multiple of 31220 and 31225