What is the Greatest Common Factor of 31836 and 31840?

Greatest common factor (GCF) of 31836 and 31840 is 4.

GCF(31836,31840) = 4

We will now calculate the prime factors of 31836 and 31840, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 31836 and 31840.

How to find the GCF of 31836 and 31840?

We will first find the prime factorization of 31836 and 31840. After we will calculate the factors of 31836 and 31840 and find the biggest common factor number .

Step-1: Prime Factorization of 31836

Prime factors of 31836 are 2, 3, 7, 379. Prime factorization of 31836 in exponential form is:

31836 = 2² × 3¹ × 7¹ × 379¹

Step-2: Prime Factorization of 31840

Prime factors of 31840 are 2, 5, 199. Prime factorization of 31840 in exponential form is:

31840 = 2⁵ × 5¹ × 199¹

Step-3: Factors of 31836

List of positive integer factors of 31836 that divides 31836 without a remainder.

1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 379, 758, 1137, 1516, 2274, 2653, 4548, 5306, 7959, 10612, 15918

Step-4: Factors of 31840

List of positive integer factors of 31840 that divides 31836 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 199, 398, 796, 995, 1592, 1990, 3184, 3980, 6368, 7960, 15920

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 31836 and 31840. The biggest common factor number is the GCF number.
So the greatest common factor 31836 and 31840 is 4.

Also check out the Least Common Multiple of 31836 and 31840