What is the Greatest Common Factor of 32805 and 32820?

Greatest common factor (GCF) of 32805 and 32820 is 15.

GCF(32805,32820) = 15

We will now calculate the prime factors of 32805 and 32820, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 32805 and 32820.

How to find the GCF of 32805 and 32820?

We will first find the prime factorization of 32805 and 32820. After we will calculate the factors of 32805 and 32820 and find the biggest common factor number .

Step-1: Prime Factorization of 32805

Prime factors of 32805 are 3, 5. Prime factorization of 32805 in exponential form is:

32805 = 3⁸ × 5¹

Step-2: Prime Factorization of 32820

Prime factors of 32820 are 2, 3, 5, 547. Prime factorization of 32820 in exponential form is:

32820 = 2² × 3¹ × 5¹ × 547¹

Step-3: Factors of 32805

List of positive integer factors of 32805 that divides 32805 without a remainder.

1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 2187, 3645, 6561, 10935

Step-4: Factors of 32820

List of positive integer factors of 32820 that divides 32805 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 547, 1094, 1641, 2188, 2735, 3282, 5470, 6564, 8205, 10940, 16410

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 32805 and 32820. The biggest common factor number is the GCF number.
So the greatest common factor 32805 and 32820 is 15.

Also check out the Least Common Multiple of 32805 and 32820