What is the Greatest Common Factor of 21006 and 21024?

Greatest common factor (GCF) of 21006 and 21024 is 18.

GCF(21006,21024) = 18

We will now calculate the prime factors of 21006 and 21024, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21006 and 21024.

How to find the GCF of 21006 and 21024?

We will first find the prime factorization of 21006 and 21024. After we will calculate the factors of 21006 and 21024 and find the biggest common factor number .

Step-1: Prime Factorization of 21006

Prime factors of 21006 are 2, 3, 389. Prime factorization of 21006 in exponential form is:

21006 = 2¹ × 3³ × 389¹

Step-2: Prime Factorization of 21024

Prime factors of 21024 are 2, 3, 73. Prime factorization of 21024 in exponential form is:

21024 = 2⁵ × 3² × 73¹

Step-3: Factors of 21006

List of positive integer factors of 21006 that divides 21006 without a remainder.

1, 2, 3, 6, 9, 18, 27, 54, 389, 778, 1167, 2334, 3501, 7002, 10503

Step-4: Factors of 21024

List of positive integer factors of 21024 that divides 21006 without a remainder.

1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 73, 96, 144, 146, 219, 288, 292, 438, 584, 657, 876, 1168, 1314, 1752, 2336, 2628, 3504, 5256, 7008, 10512

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21006 and 21024. The biggest common factor number is the GCF number.
So the greatest common factor 21006 and 21024 is 18.

Also check out the Least Common Multiple of 21006 and 21024