What is the Greatest Common Factor of 31668 and 31680?

Greatest common factor (GCF) of 31668 and 31680 is 12.

GCF(31668,31680) = 12

We will now calculate the prime factors of 31668 and 31680, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 31668 and 31680.

How to find the GCF of 31668 and 31680?

We will first find the prime factorization of 31668 and 31680. After we will calculate the factors of 31668 and 31680 and find the biggest common factor number .

Step-1: Prime Factorization of 31668

Prime factors of 31668 are 2, 3, 7, 13, 29. Prime factorization of 31668 in exponential form is:

31668 = 2² × 3¹ × 7¹ × 13¹ × 29¹

Step-2: Prime Factorization of 31680

Prime factors of 31680 are 2, 3, 5, 11. Prime factorization of 31680 in exponential form is:

31680 = 2⁶ × 3² × 5¹ × 11¹

Step-3: Factors of 31668

List of positive integer factors of 31668 that divides 31668 without a remainder.

1, 2, 3, 4, 6, 7, 12, 13, 14, 21, 26, 28, 29, 39, 42, 52, 58, 78, 84, 87, 91, 116, 156, 174, 182, 203, 273, 348, 364, 377, 406, 546, 609, 754, 812, 1092, 1131, 1218, 1508, 2262, 2436, 2639, 4524, 5278, 7917, 10556, 15834

Step-4: Factors of 31680

List of positive integer factors of 31680 that divides 31668 without a remainder.

1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 32, 33, 36, 40, 44, 45, 48, 55, 60, 64, 66, 72, 80, 88, 90, 96, 99, 110, 120, 132, 144, 160, 165, 176, 180, 192, 198, 220, 240, 264, 288, 320, 330, 352, 360, 396, 440, 480, 495, 528, 576, 660, 704, 720, 792, 880, 960, 990, 1056, 1320, 1440, 1584, 1760, 1980, 2112, 2640, 2880, 3168, 3520, 3960, 5280, 6336, 7920, 10560, 15840

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 31668 and 31680. The biggest common factor number is the GCF number.
So the greatest common factor 31668 and 31680 is 12.

Also check out the Least Common Multiple of 31668 and 31680