What is the Greatest Common Factor of 27720 and 27731?

Greatest common factor (GCF) of 27720 and 27731 is 11.

GCF(27720,27731) = 11

We will now calculate the prime factors of 27720 and 27731, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 27720 and 27731.

How to find the GCF of 27720 and 27731?

We will first find the prime factorization of 27720 and 27731. After we will calculate the factors of 27720 and 27731 and find the biggest common factor number .

Step-1: Prime Factorization of 27720

Prime factors of 27720 are 2, 3, 5, 7, 11. Prime factorization of 27720 in exponential form is:

27720 = 2³ × 3² × 5¹ × 7¹ × 11¹

Step-2: Prime Factorization of 27731

Prime factors of 27731 are 11, 2521. Prime factorization of 27731 in exponential form is:

27731 = 11¹ × 2521¹

Step-3: Factors of 27720

List of positive integer factors of 27720 that divides 27720 without a remainder.

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 24, 28, 30, 33, 35, 36, 40, 42, 44, 45, 55, 56, 60, 63, 66, 70, 72, 77, 84, 88, 90, 99, 105, 110, 120, 126, 132, 140, 154, 165, 168, 180, 198, 210, 220, 231, 252, 264, 280, 308, 315, 330, 360, 385, 396, 420, 440, 462, 495, 504, 616, 630, 660, 693, 770, 792, 840, 924, 990, 1155, 1260, 1320, 1386, 1540, 1848, 1980, 2310, 2520, 2772, 3080, 3465, 3960, 4620, 5544, 6930, 9240, 13860

Step-4: Factors of 27731

List of positive integer factors of 27731 that divides 27720 without a remainder.

1, 11, 2521

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 27720 and 27731. The biggest common factor number is the GCF number.
So the greatest common factor 27720 and 27731 is 11.

Also check out the Least Common Multiple of 27720 and 27731