What is the Greatest Common Factor of 27860 and 27880?

Greatest common factor (GCF) of 27860 and 27880 is 20.

GCF(27860,27880) = 20

We will now calculate the prime factors of 27860 and 27880, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 27860 and 27880.

How to find the GCF of 27860 and 27880?

We will first find the prime factorization of 27860 and 27880. After we will calculate the factors of 27860 and 27880 and find the biggest common factor number .

Step-1: Prime Factorization of 27860

Prime factors of 27860 are 2, 5, 7, 199. Prime factorization of 27860 in exponential form is:

27860 = 2² × 5¹ × 7¹ × 199¹

Step-2: Prime Factorization of 27880

Prime factors of 27880 are 2, 5, 17, 41. Prime factorization of 27880 in exponential form is:

27880 = 2³ × 5¹ × 17¹ × 41¹

Step-3: Factors of 27860

List of positive integer factors of 27860 that divides 27860 without a remainder.

1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 199, 398, 796, 995, 1393, 1990, 2786, 3980, 5572, 6965, 13930

Step-4: Factors of 27880

List of positive integer factors of 27880 that divides 27860 without a remainder.

1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 41, 68, 82, 85, 136, 164, 170, 205, 328, 340, 410, 680, 697, 820, 1394, 1640, 2788, 3485, 5576, 6970, 13940

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 27860 and 27880. The biggest common factor number is the GCF number.
So the greatest common factor 27860 and 27880 is 20.

Also check out the Least Common Multiple of 27860 and 27880