What is the Greatest Common Factor of 21486 and 21495?

Greatest common factor (GCF) of 21486 and 21495 is 3.

GCF(21486,21495) = 3

We will now calculate the prime factors of 21486 and 21495, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21486 and 21495.

How to find the GCF of 21486 and 21495?

We will first find the prime factorization of 21486 and 21495. After we will calculate the factors of 21486 and 21495 and find the biggest common factor number .

Step-1: Prime Factorization of 21486

Prime factors of 21486 are 2, 3, 3581. Prime factorization of 21486 in exponential form is:

21486 = 2¹ × 3¹ × 3581¹

Step-2: Prime Factorization of 21495

Prime factors of 21495 are 3, 5, 1433. Prime factorization of 21495 in exponential form is:

21495 = 3¹ × 5¹ × 1433¹

Step-3: Factors of 21486

List of positive integer factors of 21486 that divides 21486 without a remainder.

1, 2, 3, 6, 3581, 7162, 10743

Step-4: Factors of 21495

List of positive integer factors of 21495 that divides 21486 without a remainder.

1, 3, 5, 15, 1433, 4299, 7165

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21486 and 21495. The biggest common factor number is the GCF number.
So the greatest common factor 21486 and 21495 is 3.

Also check out the Least Common Multiple of 21486 and 21495