What is the Greatest Common Factor of 16780 and 16785?

Greatest common factor (GCF) of 16780 and 16785 is 5.

GCF(16780,16785) = 5

We will now calculate the prime factors of 16780 and 16785, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 16780 and 16785.

How to find the GCF of 16780 and 16785?

We will first find the prime factorization of 16780 and 16785. After we will calculate the factors of 16780 and 16785 and find the biggest common factor number .

Step-1: Prime Factorization of 16780

Prime factors of 16780 are 2, 5, 839. Prime factorization of 16780 in exponential form is:

16780 = 2² × 5¹ × 839¹

Step-2: Prime Factorization of 16785

Prime factors of 16785 are 3, 5, 373. Prime factorization of 16785 in exponential form is:

16785 = 3² × 5¹ × 373¹

Step-3: Factors of 16780

List of positive integer factors of 16780 that divides 16780 without a remainder.

1, 2, 4, 5, 10, 20, 839, 1678, 3356, 4195, 8390

Step-4: Factors of 16785

List of positive integer factors of 16785 that divides 16780 without a remainder.

1, 3, 5, 9, 15, 45, 373, 1119, 1865, 3357, 5595

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 16780 and 16785. The biggest common factor number is the GCF number.
So the greatest common factor 16780 and 16785 is 5.

Also check out the Least Common Multiple of 16780 and 16785