What is the Greatest Common Factor of 17840 and 17856?

Greatest common factor (GCF) of 17840 and 17856 is 16.

GCF(17840,17856) = 16

We will now calculate the prime factors of 17840 and 17856, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 17840 and 17856.

How to find the GCF of 17840 and 17856?

We will first find the prime factorization of 17840 and 17856. After we will calculate the factors of 17840 and 17856 and find the biggest common factor number .

Step-1: Prime Factorization of 17840

Prime factors of 17840 are 2, 5, 223. Prime factorization of 17840 in exponential form is:

17840 = 2⁴ × 5¹ × 223¹

Step-2: Prime Factorization of 17856

Prime factors of 17856 are 2, 3, 31. Prime factorization of 17856 in exponential form is:

17856 = 2⁶ × 3² × 31¹

Step-3: Factors of 17840

List of positive integer factors of 17840 that divides 17840 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 223, 446, 892, 1115, 1784, 2230, 3568, 4460, 8920

Step-4: Factors of 17856

List of positive integer factors of 17856 that divides 17840 without a remainder.

1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 31, 32, 36, 48, 62, 64, 72, 93, 96, 124, 144, 186, 192, 248, 279, 288, 372, 496, 558, 576, 744, 992, 1116, 1488, 1984, 2232, 2976, 4464, 5952, 8928

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 17840 and 17856. The biggest common factor number is the GCF number.
So the greatest common factor 17840 and 17856 is 16.

Also check out the Least Common Multiple of 17840 and 17856