What is the Greatest Common Factor of 20820 and 20830?

Greatest common factor (GCF) of 20820 and 20830 is 10.

GCF(20820,20830) = 10

We will now calculate the prime factors of 20820 and 20830, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20820 and 20830.

How to find the GCF of 20820 and 20830?

We will first find the prime factorization of 20820 and 20830. After we will calculate the factors of 20820 and 20830 and find the biggest common factor number .

Step-1: Prime Factorization of 20820

Prime factors of 20820 are 2, 3, 5, 347. Prime factorization of 20820 in exponential form is:

20820 = 2² × 3¹ × 5¹ × 347¹

Step-2: Prime Factorization of 20830

Prime factors of 20830 are 2, 5, 2083. Prime factorization of 20830 in exponential form is:

20830 = 2¹ × 5¹ × 2083¹

Step-3: Factors of 20820

List of positive integer factors of 20820 that divides 20820 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 347, 694, 1041, 1388, 1735, 2082, 3470, 4164, 5205, 6940, 10410

Step-4: Factors of 20830

List of positive integer factors of 20830 that divides 20820 without a remainder.

1, 2, 5, 10, 2083, 4166, 10415

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20820 and 20830. The biggest common factor number is the GCF number.
So the greatest common factor 20820 and 20830 is 10.

Also check out the Least Common Multiple of 20820 and 20830