What is the Greatest Common Factor of 18561 and 18570?

Greatest common factor (GCF) of 18561 and 18570 is 3.

GCF(18561,18570) = 3

We will now calculate the prime factors of 18561 and 18570, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18561 and 18570.

How to find the GCF of 18561 and 18570?

We will first find the prime factorization of 18561 and 18570. After we will calculate the factors of 18561 and 18570 and find the biggest common factor number .

Step-1: Prime Factorization of 18561

Prime factors of 18561 are 3, 23, 269. Prime factorization of 18561 in exponential form is:

18561 = 3¹ × 23¹ × 269¹

Step-2: Prime Factorization of 18570

Prime factors of 18570 are 2, 3, 5, 619. Prime factorization of 18570 in exponential form is:

18570 = 2¹ × 3¹ × 5¹ × 619¹

Step-3: Factors of 18561

List of positive integer factors of 18561 that divides 18561 without a remainder.

1, 3, 23, 69, 269, 807, 6187

Step-4: Factors of 18570

List of positive integer factors of 18570 that divides 18561 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30, 619, 1238, 1857, 3095, 3714, 6190, 9285

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18561 and 18570. The biggest common factor number is the GCF number.
So the greatest common factor 18561 and 18570 is 3.

Also check out the Least Common Multiple of 18561 and 18570