What is the Greatest Common Factor of 71760 and 71780?

Greatest common factor (GCF) of 71760 and 71780 is 20.

GCF(71760,71780) = 20

We will now calculate the prime factors of 71760 and 71780, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 71760 and 71780.

How to find the GCF of 71760 and 71780?

We will first find the prime factorization of 71760 and 71780. After we will calculate the factors of 71760 and 71780 and find the biggest common factor number .

Step-1: Prime Factorization of 71760

Prime factors of 71760 are 2, 3, 5, 13, 23. Prime factorization of 71760 in exponential form is:

71760 = 2⁴ × 3¹ × 5¹ × 13¹ × 23¹

Step-2: Prime Factorization of 71780

Prime factors of 71780 are 2, 5, 37, 97. Prime factorization of 71780 in exponential form is:

71780 = 2² × 5¹ × 37¹ × 97¹

Step-3: Factors of 71760

List of positive integer factors of 71760 that divides 71760 without a remainder.

1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 23, 24, 26, 30, 39, 40, 46, 48, 52, 60, 65, 69, 78, 80, 92, 104, 115, 120, 130, 138, 156, 184, 195, 208, 230, 240, 260, 276, 299, 312, 345, 368, 390, 460, 520, 552, 598, 624, 690, 780, 897, 920, 1040, 1104, 1196, 1380, 1495, 1560, 1794, 1840, 2392, 2760, 2990, 3120, 3588, 4485, 4784, 5520, 5980, 7176, 8970, 11960, 14352, 17940, 23920, 35880

Step-4: Factors of 71780

List of positive integer factors of 71780 that divides 71760 without a remainder.

1, 2, 4, 5, 10, 20, 37, 74, 97, 148, 185, 194, 370, 388, 485, 740, 970, 1940, 3589, 7178, 14356, 17945, 35890

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 71760 and 71780. The biggest common factor number is the GCF number.
So the greatest common factor 71760 and 71780 is 20.

Also check out the Least Common Multiple of 71760 and 71780