What is the Greatest Common Factor of 18720 and 18731?

Greatest common factor (GCF) of 18720 and 18731 is 1.

GCF(18720,18731) = 1

We will now calculate the prime factors of 18720 and 18731, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18720 and 18731.

How to find the GCF of 18720 and 18731?

We will first find the prime factorization of 18720 and 18731. After we will calculate the factors of 18720 and 18731 and find the biggest common factor number .

Step-1: Prime Factorization of 18720

Prime factors of 18720 are 2, 3, 5, 13. Prime factorization of 18720 in exponential form is:

18720 = 2⁵ × 3² × 5¹ × 13¹

Step-2: Prime Factorization of 18731

Prime factors of 18731 are 18731. Prime factorization of 18731 in exponential form is:

18731 = 18731¹

Step-3: Factors of 18720

List of positive integer factors of 18720 that divides 18720 without a remainder.

1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 32, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 96, 104, 117, 120, 130, 144, 156, 160, 180, 195, 208, 234, 240, 260, 288, 312, 360, 390, 416, 468, 480, 520, 585, 624, 720, 780, 936, 1040, 1170, 1248, 1440, 1560, 1872, 2080, 2340, 3120, 3744, 4680, 6240, 9360

Step-4: Factors of 18731

List of positive integer factors of 18731 that divides 18720 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18720 and 18731. The biggest common factor number is the GCF number.
So the greatest common factor 18720 and 18731 is 1.

Also check out the Least Common Multiple of 18720 and 18731