What is the Greatest Common Factor of 28040 and 28045?

Greatest common factor (GCF) of 28040 and 28045 is 5.

GCF(28040,28045) = 5

We will now calculate the prime factors of 28040 and 28045, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28040 and 28045.

How to find the GCF of 28040 and 28045?

We will first find the prime factorization of 28040 and 28045. After we will calculate the factors of 28040 and 28045 and find the biggest common factor number .

Step-1: Prime Factorization of 28040

Prime factors of 28040 are 2, 5, 701. Prime factorization of 28040 in exponential form is:

28040 = 2³ × 5¹ × 701¹

Step-2: Prime Factorization of 28045

Prime factors of 28045 are 5, 71, 79. Prime factorization of 28045 in exponential form is:

28045 = 5¹ × 71¹ × 79¹

Step-3: Factors of 28040

List of positive integer factors of 28040 that divides 28040 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 701, 1402, 2804, 3505, 5608, 7010, 14020

Step-4: Factors of 28045

List of positive integer factors of 28045 that divides 28040 without a remainder.

1, 5, 71, 79, 355, 395, 5609

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28040 and 28045. The biggest common factor number is the GCF number.
So the greatest common factor 28040 and 28045 is 5.

Also check out the Least Common Multiple of 28040 and 28045