What is the Greatest Common Factor of 18690 and 18700?

Greatest common factor (GCF) of 18690 and 18700 is 10.

GCF(18690,18700) = 10

We will now calculate the prime factors of 18690 and 18700, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18690 and 18700.

How to find the GCF of 18690 and 18700?

We will first find the prime factorization of 18690 and 18700. After we will calculate the factors of 18690 and 18700 and find the biggest common factor number .

Step-1: Prime Factorization of 18690

Prime factors of 18690 are 2, 3, 5, 7, 89. Prime factorization of 18690 in exponential form is:

18690 = 2¹ × 3¹ × 5¹ × 7¹ × 89¹

Step-2: Prime Factorization of 18700

Prime factors of 18700 are 2, 5, 11, 17. Prime factorization of 18700 in exponential form is:

18700 = 2² × 5² × 11¹ × 17¹

Step-3: Factors of 18690

List of positive integer factors of 18690 that divides 18690 without a remainder.

1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 89, 105, 178, 210, 267, 445, 534, 623, 890, 1246, 1335, 1869, 2670, 3115, 3738, 6230, 9345

Step-4: Factors of 18700

List of positive integer factors of 18700 that divides 18690 without a remainder.

1, 2, 4, 5, 10, 11, 17, 20, 22, 25, 34, 44, 50, 55, 68, 85, 100, 110, 170, 187, 220, 275, 340, 374, 425, 550, 748, 850, 935, 1100, 1700, 1870, 3740, 4675, 9350

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18690 and 18700. The biggest common factor number is the GCF number.
So the greatest common factor 18690 and 18700 is 10.

Also check out the Least Common Multiple of 18690 and 18700