What is the Greatest Common Factor of 21746 and 21760?

Greatest common factor (GCF) of 21746 and 21760 is 2.

GCF(21746,21760) = 2

We will now calculate the prime factors of 21746 and 21760, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21746 and 21760.

How to find the GCF of 21746 and 21760?

We will first find the prime factorization of 21746 and 21760. After we will calculate the factors of 21746 and 21760 and find the biggest common factor number .

Step-1: Prime Factorization of 21746

Prime factors of 21746 are 2, 83, 131. Prime factorization of 21746 in exponential form is:

21746 = 2¹ × 83¹ × 131¹

Step-2: Prime Factorization of 21760

Prime factors of 21760 are 2, 5, 17. Prime factorization of 21760 in exponential form is:

21760 = 2⁸ × 5¹ × 17¹

Step-3: Factors of 21746

List of positive integer factors of 21746 that divides 21746 without a remainder.

1, 2, 83, 131, 166, 262, 10873

Step-4: Factors of 21760

List of positive integer factors of 21760 that divides 21746 without a remainder.

1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 256, 272, 320, 340, 544, 640, 680, 1088, 1280, 1360, 2176, 2720, 4352, 5440, 10880

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21746 and 21760. The biggest common factor number is the GCF number.
So the greatest common factor 21746 and 21760 is 2.

Also check out the Least Common Multiple of 21746 and 21760