What is the Greatest Common Factor of 16809 and 16820?

Greatest common factor (GCF) of 16809 and 16820 is 1.

GCF(16809,16820) = 1

We will now calculate the prime factors of 16809 and 16820, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 16809 and 16820.

How to find the GCF of 16809 and 16820?

We will first find the prime factorization of 16809 and 16820. After we will calculate the factors of 16809 and 16820 and find the biggest common factor number .

Step-1: Prime Factorization of 16809

Prime factors of 16809 are 3, 13, 431. Prime factorization of 16809 in exponential form is:

16809 = 3¹ × 13¹ × 431¹

Step-2: Prime Factorization of 16820

Prime factors of 16820 are 2, 5, 29. Prime factorization of 16820 in exponential form is:

16820 = 2² × 5¹ × 29²

Step-3: Factors of 16809

List of positive integer factors of 16809 that divides 16809 without a remainder.

1, 3, 13, 39, 431, 1293, 5603

Step-4: Factors of 16820

List of positive integer factors of 16820 that divides 16809 without a remainder.

1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 841, 1682, 3364, 4205, 8410

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 16809 and 16820. The biggest common factor number is the GCF number.
So the greatest common factor 16809 and 16820 is 1.

Also check out the Least Common Multiple of 16809 and 16820