What is the Greatest Common Factor of 19722 and 19738?

Greatest common factor (GCF) of 19722 and 19738 is 2.

GCF(19722,19738) = 2

We will now calculate the prime factors of 19722 and 19738, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 19722 and 19738.

How to find the GCF of 19722 and 19738?

We will first find the prime factorization of 19722 and 19738. After we will calculate the factors of 19722 and 19738 and find the biggest common factor number .

Step-1: Prime Factorization of 19722

Prime factors of 19722 are 2, 3, 19, 173. Prime factorization of 19722 in exponential form is:

19722 = 2¹ × 3¹ × 19¹ × 173¹

Step-2: Prime Factorization of 19738

Prime factors of 19738 are 2, 71, 139. Prime factorization of 19738 in exponential form is:

19738 = 2¹ × 71¹ × 139¹

Step-3: Factors of 19722

List of positive integer factors of 19722 that divides 19722 without a remainder.

1, 2, 3, 6, 19, 38, 57, 114, 173, 346, 519, 1038, 3287, 6574, 9861

Step-4: Factors of 19738

List of positive integer factors of 19738 that divides 19722 without a remainder.

1, 2, 71, 139, 142, 278, 9869

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 19722 and 19738. The biggest common factor number is the GCF number.
So the greatest common factor 19722 and 19738 is 2.

Also check out the Least Common Multiple of 19722 and 19738