What is the Greatest Common Factor of 81220 and 81236?

Greatest common factor (GCF) of 81220 and 81236 is 4.

GCF(81220,81236) = 4

We will now calculate the prime factors of 81220 and 81236, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81220 and 81236.

How to find the GCF of 81220 and 81236?

We will first find the prime factorization of 81220 and 81236. After we will calculate the factors of 81220 and 81236 and find the biggest common factor number .

Step-1: Prime Factorization of 81220

Prime factors of 81220 are 2, 5, 31, 131. Prime factorization of 81220 in exponential form is:

81220 = 2² × 5¹ × 31¹ × 131¹

Step-2: Prime Factorization of 81236

Prime factors of 81236 are 2, 23, 883. Prime factorization of 81236 in exponential form is:

81236 = 2² × 23¹ × 883¹

Step-3: Factors of 81220

List of positive integer factors of 81220 that divides 81220 without a remainder.

1, 2, 4, 5, 10, 20, 31, 62, 124, 131, 155, 262, 310, 524, 620, 655, 1310, 2620, 4061, 8122, 16244, 20305, 40610

Step-4: Factors of 81236

List of positive integer factors of 81236 that divides 81220 without a remainder.

1, 2, 4, 23, 46, 92, 883, 1766, 3532, 20309, 40618

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81220 and 81236. The biggest common factor number is the GCF number.
So the greatest common factor 81220 and 81236 is 4.

Also check out the Least Common Multiple of 81220 and 81236