What is the Greatest Common Factor of 86490 and 86505?

Greatest common factor (GCF) of 86490 and 86505 is 15.

GCF(86490,86505) = 15

We will now calculate the prime factors of 86490 and 86505, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 86490 and 86505.

How to find the GCF of 86490 and 86505?

We will first find the prime factorization of 86490 and 86505. After we will calculate the factors of 86490 and 86505 and find the biggest common factor number .

Step-1: Prime Factorization of 86490

Prime factors of 86490 are 2, 3, 5, 31. Prime factorization of 86490 in exponential form is:

86490 = 2¹ × 3² × 5¹ × 31²

Step-2: Prime Factorization of 86505

Prime factors of 86505 are 3, 5, 73, 79. Prime factorization of 86505 in exponential form is:

86505 = 3¹ × 5¹ × 73¹ × 79¹

Step-3: Factors of 86490

List of positive integer factors of 86490 that divides 86490 without a remainder.

1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 31, 45, 62, 90, 93, 155, 186, 279, 310, 465, 558, 930, 961, 1395, 1922, 2790, 2883, 4805, 5766, 8649, 9610, 14415, 17298, 28830, 43245

Step-4: Factors of 86505

List of positive integer factors of 86505 that divides 86490 without a remainder.

1, 3, 5, 15, 73, 79, 219, 237, 365, 395, 1095, 1185, 5767, 17301, 28835

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 86490 and 86505. The biggest common factor number is the GCF number.
So the greatest common factor 86490 and 86505 is 15.

Also check out the Least Common Multiple of 86490 and 86505