What is the Greatest Common Factor of 3640 and 3655?

Greatest common factor (GCF) of 3640 and 3655 is 5.

GCF(3640,3655) = 5

We will now calculate the prime factors of 3640 and 3655, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 3640 and 3655.

How to find the GCF of 3640 and 3655?

We will first find the prime factorization of 3640 and 3655. After we will calculate the factors of 3640 and 3655 and find the biggest common factor number .

Step-1: Prime Factorization of 3640

Prime factors of 3640 are 2, 5, 7, 13. Prime factorization of 3640 in exponential form is:

3640 = 2³ × 5¹ × 7¹ × 13¹

Step-2: Prime Factorization of 3655

Prime factors of 3655 are 5, 17, 43. Prime factorization of 3655 in exponential form is:

3655 = 5¹ × 17¹ × 43¹

Step-3: Factors of 3640

List of positive integer factors of 3640 that divides 3640 without a remainder.

1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820

Step-4: Factors of 3655

List of positive integer factors of 3655 that divides 3640 without a remainder.

1, 5, 17, 43, 85, 215, 731

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 3640 and 3655. The biggest common factor number is the GCF number.
So the greatest common factor 3640 and 3655 is 5.

Also check out the Least Common Multiple of 3640 and 3655