What is the Greatest Common Factor of 76860 and 76880?

Greatest common factor (GCF) of 76860 and 76880 is 20.

GCF(76860,76880) = 20

We will now calculate the prime factors of 76860 and 76880, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 76860 and 76880.

How to find the GCF of 76860 and 76880?

We will first find the prime factorization of 76860 and 76880. After we will calculate the factors of 76860 and 76880 and find the biggest common factor number .

Step-1: Prime Factorization of 76860

Prime factors of 76860 are 2, 3, 5, 7, 61. Prime factorization of 76860 in exponential form is:

76860 = 2² × 3² × 5¹ × 7¹ × 61¹

Step-2: Prime Factorization of 76880

Prime factors of 76880 are 2, 5, 31. Prime factorization of 76880 in exponential form is:

76880 = 2⁴ × 5¹ × 31²

Step-3: Factors of 76860

List of positive integer factors of 76860 that divides 76860 without a remainder.

1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 61, 63, 70, 84, 90, 105, 122, 126, 140, 180, 183, 210, 244, 252, 305, 315, 366, 420, 427, 549, 610, 630, 732, 854, 915, 1098, 1220, 1260, 1281, 1708, 1830, 2135, 2196, 2562, 2745, 3660, 3843, 4270, 5124, 5490, 6405, 7686, 8540, 10980, 12810, 15372, 19215, 25620, 38430

Step-4: Factors of 76880

List of positive integer factors of 76880 that divides 76860 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 961, 1240, 1922, 2480, 3844, 4805, 7688, 9610, 15376, 19220, 38440

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 76860 and 76880. The biggest common factor number is the GCF number.
So the greatest common factor 76860 and 76880 is 20.

Also check out the Least Common Multiple of 76860 and 76880