What is the Greatest Common Factor of 28021 and 28040?

Greatest common factor (GCF) of 28021 and 28040 is 1.

GCF(28021,28040) = 1

We will now calculate the prime factors of 28021 and 28040, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28021 and 28040.

How to find the GCF of 28021 and 28040?

We will first find the prime factorization of 28021 and 28040. After we will calculate the factors of 28021 and 28040 and find the biggest common factor number .

Step-1: Prime Factorization of 28021

Prime factors of 28021 are 7, 4003. Prime factorization of 28021 in exponential form is:

28021 = 7¹ × 4003¹

Step-2: 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-3: Factors of 28021

List of positive integer factors of 28021 that divides 28021 without a remainder.

1, 7, 4003

Step-4: Factors of 28040

List of positive integer factors of 28040 that divides 28021 without a remainder.

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

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28021 and 28040. The biggest common factor number is the GCF number.
So the greatest common factor 28021 and 28040 is 1.

Also check out the Least Common Multiple of 28021 and 28040