What is the Greatest Common Factor of 21831 and 21850?

Greatest common factor (GCF) of 21831 and 21850 is 19.

GCF(21831,21850) = 19

We will now calculate the prime factors of 21831 and 21850, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21831 and 21850.

How to find the GCF of 21831 and 21850?

We will first find the prime factorization of 21831 and 21850. After we will calculate the factors of 21831 and 21850 and find the biggest common factor number .

Step-1: Prime Factorization of 21831

Prime factors of 21831 are 3, 19, 383. Prime factorization of 21831 in exponential form is:

21831 = 3¹ × 19¹ × 383¹

Step-2: Prime Factorization of 21850

Prime factors of 21850 are 2, 5, 19, 23. Prime factorization of 21850 in exponential form is:

21850 = 2¹ × 5² × 19¹ × 23¹

Step-3: Factors of 21831

List of positive integer factors of 21831 that divides 21831 without a remainder.

1, 3, 19, 57, 383, 1149, 7277

Step-4: Factors of 21850

List of positive integer factors of 21850 that divides 21831 without a remainder.

1, 2, 5, 10, 19, 23, 25, 38, 46, 50, 95, 115, 190, 230, 437, 475, 575, 874, 950, 1150, 2185, 4370, 10925

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21831 and 21850. The biggest common factor number is the GCF number.
So the greatest common factor 21831 and 21850 is 19.

Also check out the Least Common Multiple of 21831 and 21850