What is the Greatest Common Factor of 80805 and 80820?

Greatest common factor (GCF) of 80805 and 80820 is 15.

GCF(80805,80820) = 15

We will now calculate the prime factors of 80805 and 80820, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 80805 and 80820.

How to find the GCF of 80805 and 80820?

We will first find the prime factorization of 80805 and 80820. After we will calculate the factors of 80805 and 80820 and find the biggest common factor number .

Step-1: Prime Factorization of 80805

Prime factors of 80805 are 3, 5, 5387. Prime factorization of 80805 in exponential form is:

80805 = 3¹ × 5¹ × 5387¹

Step-2: Prime Factorization of 80820

Prime factors of 80820 are 2, 3, 5, 449. Prime factorization of 80820 in exponential form is:

80820 = 2² × 3² × 5¹ × 449¹

Step-3: Factors of 80805

List of positive integer factors of 80805 that divides 80805 without a remainder.

1, 3, 5, 15, 5387, 16161, 26935

Step-4: Factors of 80820

List of positive integer factors of 80820 that divides 80805 without a remainder.

1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 449, 898, 1347, 1796, 2245, 2694, 4041, 4490, 5388, 6735, 8082, 8980, 13470, 16164, 20205, 26940, 40410

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 80805 and 80820. The biggest common factor number is the GCF number.
So the greatest common factor 80805 and 80820 is 15.

Also check out the Least Common Multiple of 80805 and 80820