What is the Greatest Common Factor of 19557 and 19572?

Greatest common factor (GCF) of 19557 and 19572 is 3.

GCF(19557,19572) = 3

We will now calculate the prime factors of 19557 and 19572, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 19557 and 19572.

How to find the GCF of 19557 and 19572?

We will first find the prime factorization of 19557 and 19572. After we will calculate the factors of 19557 and 19572 and find the biggest common factor number .

Step-1: Prime Factorization of 19557

Prime factors of 19557 are 3, 41, 53. Prime factorization of 19557 in exponential form is:

19557 = 3² × 41¹ × 53¹

Step-2: Prime Factorization of 19572

Prime factors of 19572 are 2, 3, 7, 233. Prime factorization of 19572 in exponential form is:

19572 = 2² × 3¹ × 7¹ × 233¹

Step-3: Factors of 19557

List of positive integer factors of 19557 that divides 19557 without a remainder.

1, 3, 9, 41, 53, 123, 159, 369, 477, 2173, 6519

Step-4: Factors of 19572

List of positive integer factors of 19572 that divides 19557 without a remainder.

1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 233, 466, 699, 932, 1398, 1631, 2796, 3262, 4893, 6524, 9786

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 19557 and 19572. The biggest common factor number is the GCF number.
So the greatest common factor 19557 and 19572 is 3.

Also check out the Least Common Multiple of 19557 and 19572