What is the Greatest Common Factor of 81207 and 81216?

Greatest common factor (GCF) of 81207 and 81216 is 9.

GCF(81207,81216) = 9

We will now calculate the prime factors of 81207 and 81216, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81207 and 81216.

How to find the GCF of 81207 and 81216?

We will first find the prime factorization of 81207 and 81216. After we will calculate the factors of 81207 and 81216 and find the biggest common factor number .

Step-1: Prime Factorization of 81207

Prime factors of 81207 are 3, 7, 1289. Prime factorization of 81207 in exponential form is:

81207 = 3² × 7¹ × 1289¹

Step-2: Prime Factorization of 81216

Prime factors of 81216 are 2, 3, 47. Prime factorization of 81216 in exponential form is:

81216 = 2⁶ × 3³ × 47¹

Step-3: Factors of 81207

List of positive integer factors of 81207 that divides 81207 without a remainder.

1, 3, 7, 9, 21, 63, 1289, 3867, 9023, 11601, 27069

Step-4: Factors of 81216

List of positive integer factors of 81216 that divides 81207 without a remainder.

1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 47, 48, 54, 64, 72, 94, 96, 108, 141, 144, 188, 192, 216, 282, 288, 376, 423, 432, 564, 576, 752, 846, 864, 1128, 1269, 1504, 1692, 1728, 2256, 2538, 3008, 3384, 4512, 5076, 6768, 9024, 10152, 13536, 20304, 27072, 40608

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81207 and 81216. The biggest common factor number is the GCF number.
So the greatest common factor 81207 and 81216 is 9.

Also check out the Least Common Multiple of 81207 and 81216