What is the Greatest Common Factor of 40840 and 40860?

Greatest common factor (GCF) of 40840 and 40860 is 20.

GCF(40840,40860) = 20

We will now calculate the prime factors of 40840 and 40860, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 40840 and 40860.

How to find the GCF of 40840 and 40860?

We will first find the prime factorization of 40840 and 40860. After we will calculate the factors of 40840 and 40860 and find the biggest common factor number .

Step-1: 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-2: Prime Factorization of 40860

Prime factors of 40860 are 2, 3, 5, 227. Prime factorization of 40860 in exponential form is:

40860 = 2² × 3² × 5¹ × 227¹

Step-3: Factors of 40840

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

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

Step-4: Factors of 40860

List of positive integer factors of 40860 that divides 40840 without a remainder.

1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 227, 454, 681, 908, 1135, 1362, 2043, 2270, 2724, 3405, 4086, 4540, 6810, 8172, 10215, 13620, 20430

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 40840 and 40860. The biggest common factor number is the GCF number.
So the greatest common factor 40840 and 40860 is 20.

Also check out the Least Common Multiple of 40840 and 40860