What is the Greatest Common Factor of 67840 and 67860?

Greatest common factor (GCF) of 67840 and 67860 is 20.

GCF(67840,67860) = 20

We will now calculate the prime factors of 67840 and 67860, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 67840 and 67860.

How to find the GCF of 67840 and 67860?

We will first find the prime factorization of 67840 and 67860. After we will calculate the factors of 67840 and 67860 and find the biggest common factor number .

Step-1: Prime Factorization of 67840

Prime factors of 67840 are 2, 5, 53. Prime factorization of 67840 in exponential form is:

67840 = 2⁸ × 5¹ × 53¹

Step-2: Prime Factorization of 67860

Prime factors of 67860 are 2, 3, 5, 13, 29. Prime factorization of 67860 in exponential form is:

67860 = 2² × 3² × 5¹ × 13¹ × 29¹

Step-3: Factors of 67840

List of positive integer factors of 67840 that divides 67840 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 64, 80, 106, 128, 160, 212, 256, 265, 320, 424, 530, 640, 848, 1060, 1280, 1696, 2120, 3392, 4240, 6784, 8480, 13568, 16960, 33920

Step-4: Factors of 67860

List of positive integer factors of 67860 that divides 67840 without a remainder.

1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 29, 30, 36, 39, 45, 52, 58, 60, 65, 78, 87, 90, 116, 117, 130, 145, 156, 174, 180, 195, 234, 260, 261, 290, 348, 377, 390, 435, 468, 522, 580, 585, 754, 780, 870, 1044, 1131, 1170, 1305, 1508, 1740, 1885, 2262, 2340, 2610, 3393, 3770, 4524, 5220, 5655, 6786, 7540, 11310, 13572, 16965, 22620, 33930

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 67840 and 67860. The biggest common factor number is the GCF number.
So the greatest common factor 67840 and 67860 is 20.

Also check out the Least Common Multiple of 67840 and 67860