What is the Greatest Common Factor of 82170 and 82185?

Greatest common factor (GCF) of 82170 and 82185 is 15.

GCF(82170,82185) = 15

We will now calculate the prime factors of 82170 and 82185, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 82170 and 82185.

How to find the GCF of 82170 and 82185?

We will first find the prime factorization of 82170 and 82185. After we will calculate the factors of 82170 and 82185 and find the biggest common factor number .

Step-1: Prime Factorization of 82170

Prime factors of 82170 are 2, 3, 5, 11, 83. Prime factorization of 82170 in exponential form is:

82170 = 2¹ × 3² × 5¹ × 11¹ × 83¹

Step-2: Prime Factorization of 82185

Prime factors of 82185 are 3, 5, 5479. Prime factorization of 82185 in exponential form is:

82185 = 3¹ × 5¹ × 5479¹

Step-3: Factors of 82170

List of positive integer factors of 82170 that divides 82170 without a remainder.

1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 83, 90, 99, 110, 165, 166, 198, 249, 330, 415, 495, 498, 747, 830, 913, 990, 1245, 1494, 1826, 2490, 2739, 3735, 4565, 5478, 7470, 8217, 9130, 13695, 16434, 27390, 41085

Step-4: Factors of 82185

List of positive integer factors of 82185 that divides 82170 without a remainder.

1, 3, 5, 15, 5479, 16437, 27395

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 82170 and 82185. The biggest common factor number is the GCF number.
So the greatest common factor 82170 and 82185 is 15.

Also check out the Least Common Multiple of 82170 and 82185