What is the Greatest Common Factor of 40820 and 40840?

Greatest common factor (GCF) of 40820 and 40840 is 20.

GCF(40820,40840) = 20

We will now calculate the prime factors of 40820 and 40840, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 40820 and 40840.

How to find the GCF of 40820 and 40840?

We will first find the prime factorization of 40820 and 40840. After we will calculate the factors of 40820 and 40840 and find the biggest common factor number .

Step-1: Prime Factorization of 40820

Prime factors of 40820 are 2, 5, 13, 157. Prime factorization of 40820 in exponential form is:

40820 = 2² × 5¹ × 13¹ × 157¹

Step-2: Prime Factorization of 40840

Prime factors of 40840 are 2, 5, 1021. Prime factorization of 40840 in exponential form is:

40840 = 2³ × 5¹ × 1021¹

Step-3: Factors of 40820

List of positive integer factors of 40820 that divides 40820 without a remainder.

1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 157, 260, 314, 628, 785, 1570, 2041, 3140, 4082, 8164, 10205, 20410

Step-4: Factors of 40840

List of positive integer factors of 40840 that divides 40820 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 1021, 2042, 4084, 5105, 8168, 10210, 20420

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 40820 and 40840. The biggest common factor number is the GCF number.
So the greatest common factor 40820 and 40840 is 20.

Also check out the Least Common Multiple of 40820 and 40840