What is the Greatest Common Factor of 8420 and 8436?

Greatest common factor (GCF) of 8420 and 8436 is 4.

GCF(8420,8436) = 4

We will now calculate the prime factors of 8420 and 8436, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 8420 and 8436.

How to find the GCF of 8420 and 8436?

We will first find the prime factorization of 8420 and 8436. After we will calculate the factors of 8420 and 8436 and find the biggest common factor number .

Step-1: Prime Factorization of 8420

Prime factors of 8420 are 2, 5, 421. Prime factorization of 8420 in exponential form is:

8420 = 2² × 5¹ × 421¹

Step-2: Prime Factorization of 8436

Prime factors of 8436 are 2, 3, 19, 37. Prime factorization of 8436 in exponential form is:

8436 = 2² × 3¹ × 19¹ × 37¹

Step-3: Factors of 8420

List of positive integer factors of 8420 that divides 8420 without a remainder.

1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 4210

Step-4: Factors of 8436

List of positive integer factors of 8436 that divides 8420 without a remainder.

1, 2, 3, 4, 6, 12, 19, 37, 38, 57, 74, 76, 111, 114, 148, 222, 228, 444, 703, 1406, 2109, 2812, 4218

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 8420 and 8436. The biggest common factor number is the GCF number.
So the greatest common factor 8420 and 8436 is 4.

Also check out the Least Common Multiple of 8420 and 8436