What is the Greatest Common Factor of 19808 and 19812?

Greatest common factor (GCF) of 19808 and 19812 is 4.

GCF(19808,19812) = 4

We will now calculate the prime factors of 19808 and 19812, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 19808 and 19812.

How to find the GCF of 19808 and 19812?

We will first find the prime factorization of 19808 and 19812. After we will calculate the factors of 19808 and 19812 and find the biggest common factor number .

Step-1: Prime Factorization of 19808

Prime factors of 19808 are 2, 619. Prime factorization of 19808 in exponential form is:

19808 = 2⁵ × 619¹

Step-2: Prime Factorization of 19812

Prime factors of 19812 are 2, 3, 13, 127. Prime factorization of 19812 in exponential form is:

19812 = 2² × 3¹ × 13¹ × 127¹

Step-3: Factors of 19808

List of positive integer factors of 19808 that divides 19808 without a remainder.

1, 2, 4, 8, 16, 32, 619, 1238, 2476, 4952, 9904

Step-4: Factors of 19812

List of positive integer factors of 19812 that divides 19808 without a remainder.

1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 127, 156, 254, 381, 508, 762, 1524, 1651, 3302, 4953, 6604, 9906

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 19808 and 19812. The biggest common factor number is the GCF number.
So the greatest common factor 19808 and 19812 is 4.

Also check out the Least Common Multiple of 19808 and 19812