What is the Greatest Common Factor of 40807 and 40820?

Greatest common factor (GCF) of 40807 and 40820 is 13.

GCF(40807,40820) = 13

We will now calculate the prime factors of 40807 and 40820, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 40807 and 40820.

How to find the GCF of 40807 and 40820?

We will first find the prime factorization of 40807 and 40820. After we will calculate the factors of 40807 and 40820 and find the biggest common factor number .

Step-1: Prime Factorization of 40807

Prime factors of 40807 are 13, 43, 73. Prime factorization of 40807 in exponential form is:

40807 = 13¹ × 43¹ × 73¹

Step-2: 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-3: Factors of 40807

List of positive integer factors of 40807 that divides 40807 without a remainder.

1, 13, 43, 73, 559, 949, 3139

Step-4: Factors of 40820

List of positive integer factors of 40820 that divides 40807 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

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 40807 and 40820. The biggest common factor number is the GCF number.
So the greatest common factor 40807 and 40820 is 13.

Also check out the Least Common Multiple of 40807 and 40820