What is the Greatest Common Factor of 64820 and 64840?

Greatest common factor (GCF) of 64820 and 64840 is 20.

GCF(64820,64840) = 20

We will now calculate the prime factors of 64820 and 64840, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 64820 and 64840.

How to find the GCF of 64820 and 64840?

We will first find the prime factorization of 64820 and 64840. After we will calculate the factors of 64820 and 64840 and find the biggest common factor number .

Step-1: Prime Factorization of 64820

Prime factors of 64820 are 2, 5, 7, 463. Prime factorization of 64820 in exponential form is:

64820 = 2² × 5¹ × 7¹ × 463¹

Step-2: Prime Factorization of 64840

Prime factors of 64840 are 2, 5, 1621. Prime factorization of 64840 in exponential form is:

64840 = 2³ × 5¹ × 1621¹

Step-3: Factors of 64820

List of positive integer factors of 64820 that divides 64820 without a remainder.

1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 463, 926, 1852, 2315, 3241, 4630, 6482, 9260, 12964, 16205, 32410

Step-4: Factors of 64840

List of positive integer factors of 64840 that divides 64820 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 1621, 3242, 6484, 8105, 12968, 16210, 32420

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 64820 and 64840. The biggest common factor number is the GCF number.
So the greatest common factor 64820 and 64840 is 20.

Also check out the Least Common Multiple of 64820 and 64840