What is the Greatest Common Factor of 81622 and 81640?

Greatest common factor (GCF) of 81622 and 81640 is 2.

GCF(81622,81640) = 2

We will now calculate the prime factors of 81622 and 81640, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81622 and 81640.

How to find the GCF of 81622 and 81640?

We will first find the prime factorization of 81622 and 81640. After we will calculate the factors of 81622 and 81640 and find the biggest common factor number .

Step-1: Prime Factorization of 81622

Prime factors of 81622 are 2, 37, 1103. Prime factorization of 81622 in exponential form is:

81622 = 2¹ × 37¹ × 1103¹

Step-2: Prime Factorization of 81640

Prime factors of 81640 are 2, 5, 13, 157. Prime factorization of 81640 in exponential form is:

81640 = 2³ × 5¹ × 13¹ × 157¹

Step-3: Factors of 81622

List of positive integer factors of 81622 that divides 81622 without a remainder.

1, 2, 37, 74, 1103, 2206, 40811

Step-4: Factors of 81640

List of positive integer factors of 81640 that divides 81622 without a remainder.

1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 157, 260, 314, 520, 628, 785, 1256, 1570, 2041, 3140, 4082, 6280, 8164, 10205, 16328, 20410, 40820

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81622 and 81640. The biggest common factor number is the GCF number.
So the greatest common factor 81622 and 81640 is 2.

Also check out the Least Common Multiple of 81622 and 81640