What is the Greatest Common Factor of 16770 and 16785?

Greatest common factor (GCF) of 16770 and 16785 is 15.

GCF(16770,16785) = 15

We will now calculate the prime factors of 16770 and 16785, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 16770 and 16785.

How to find the GCF of 16770 and 16785?

We will first find the prime factorization of 16770 and 16785. After we will calculate the factors of 16770 and 16785 and find the biggest common factor number .

Step-1: Prime Factorization of 16770

Prime factors of 16770 are 2, 3, 5, 13, 43. Prime factorization of 16770 in exponential form is:

16770 = 2¹ × 3¹ × 5¹ × 13¹ × 43¹

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 16770

List of positive integer factors of 16770 that divides 16770 without a remainder.

1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 43, 65, 78, 86, 129, 130, 195, 215, 258, 390, 430, 559, 645, 1118, 1290, 1677, 2795, 3354, 5590, 8385

Step-4: Factors of 16785

List of positive integer factors of 16785 that divides 16770 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 16770 and 16785. The biggest common factor number is the GCF number.
So the greatest common factor 16770 and 16785 is 15.

Also check out the Least Common Multiple of 16770 and 16785