What is the Greatest Common Factor of 21018 and 21026?

Greatest common factor (GCF) of 21018 and 21026 is 2.

GCF(21018,21026) = 2

We will now calculate the prime factors of 21018 and 21026, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21018 and 21026.

How to find the GCF of 21018 and 21026?

We will first find the prime factorization of 21018 and 21026. After we will calculate the factors of 21018 and 21026 and find the biggest common factor number .

Step-1: Prime Factorization of 21018

Prime factors of 21018 are 2, 3, 31, 113. Prime factorization of 21018 in exponential form is:

21018 = 2¹ × 3¹ × 31¹ × 113¹

Step-2: Prime Factorization of 21026

Prime factors of 21026 are 2, 10513. Prime factorization of 21026 in exponential form is:

21026 = 2¹ × 10513¹

Step-3: Factors of 21018

List of positive integer factors of 21018 that divides 21018 without a remainder.

1, 2, 3, 6, 31, 62, 93, 113, 186, 226, 339, 678, 3503, 7006, 10509

Step-4: Factors of 21026

List of positive integer factors of 21026 that divides 21018 without a remainder.

1, 2, 10513

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21018 and 21026. The biggest common factor number is the GCF number.
So the greatest common factor 21018 and 21026 is 2.

Also check out the Least Common Multiple of 21018 and 21026