What is the Greatest Common Factor of 28870 and 28890?

Greatest common factor (GCF) of 28870 and 28890 is 10.

GCF(28870,28890) = 10

We will now calculate the prime factors of 28870 and 28890, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28870 and 28890.

How to find the GCF of 28870 and 28890?

We will first find the prime factorization of 28870 and 28890. After we will calculate the factors of 28870 and 28890 and find the biggest common factor number .

Step-1: Prime Factorization of 28870

Prime factors of 28870 are 2, 5, 2887. Prime factorization of 28870 in exponential form is:

28870 = 2¹ × 5¹ × 2887¹

Step-2: Prime Factorization of 28890

Prime factors of 28890 are 2, 3, 5, 107. Prime factorization of 28890 in exponential form is:

28890 = 2¹ × 3³ × 5¹ × 107¹

Step-3: Factors of 28870

List of positive integer factors of 28870 that divides 28870 without a remainder.

1, 2, 5, 10, 2887, 5774, 14435

Step-4: Factors of 28890

List of positive integer factors of 28890 that divides 28870 without a remainder.

1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 107, 135, 214, 270, 321, 535, 642, 963, 1070, 1605, 1926, 2889, 3210, 4815, 5778, 9630, 14445

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28870 and 28890. The biggest common factor number is the GCF number.
So the greatest common factor 28870 and 28890 is 10.

Also check out the Least Common Multiple of 28870 and 28890