What is the Greatest Common Factor of 90210 and 90220?

Greatest common factor (GCF) of 90210 and 90220 is 10.

GCF(90210,90220) = 10

We will now calculate the prime factors of 90210 and 90220, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 90210 and 90220.

How to find the GCF of 90210 and 90220?

We will first find the prime factorization of 90210 and 90220. After we will calculate the factors of 90210 and 90220 and find the biggest common factor number .

Step-1: Prime Factorization of 90210

Prime factors of 90210 are 2, 3, 5, 31, 97. Prime factorization of 90210 in exponential form is:

90210 = 2¹ × 3¹ × 5¹ × 31¹ × 97¹

Step-2: Prime Factorization of 90220

Prime factors of 90220 are 2, 5, 13, 347. Prime factorization of 90220 in exponential form is:

90220 = 2² × 5¹ × 13¹ × 347¹

Step-3: Factors of 90210

List of positive integer factors of 90210 that divides 90210 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30, 31, 62, 93, 97, 155, 186, 194, 291, 310, 465, 485, 582, 930, 970, 1455, 2910, 3007, 6014, 9021, 15035, 18042, 30070, 45105

Step-4: Factors of 90220

List of positive integer factors of 90220 that divides 90210 without a remainder.

1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 347, 694, 1388, 1735, 3470, 4511, 6940, 9022, 18044, 22555, 45110

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 90210 and 90220. The biggest common factor number is the GCF number.
So the greatest common factor 90210 and 90220 is 10.

Also check out the Least Common Multiple of 90210 and 90220