What is the Greatest Common Factor of 85520 and 85540?

Greatest common factor (GCF) of 85520 and 85540 is 20.

GCF(85520,85540) = 20

We will now calculate the prime factors of 85520 and 85540, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 85520 and 85540.

How to find the GCF of 85520 and 85540?

We will first find the prime factorization of 85520 and 85540. After we will calculate the factors of 85520 and 85540 and find the biggest common factor number .

Step-1: Prime Factorization of 85520

Prime factors of 85520 are 2, 5, 1069. Prime factorization of 85520 in exponential form is:

85520 = 2⁴ × 5¹ × 1069¹

Step-2: Prime Factorization of 85540

Prime factors of 85540 are 2, 5, 7, 13, 47. Prime factorization of 85540 in exponential form is:

85540 = 2² × 5¹ × 7¹ × 13¹ × 47¹

Step-3: Factors of 85520

List of positive integer factors of 85520 that divides 85520 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1069, 2138, 4276, 5345, 8552, 10690, 17104, 21380, 42760

Step-4: Factors of 85540

List of positive integer factors of 85540 that divides 85520 without a remainder.

1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 47, 52, 65, 70, 91, 94, 130, 140, 182, 188, 235, 260, 329, 364, 455, 470, 611, 658, 910, 940, 1222, 1316, 1645, 1820, 2444, 3055, 3290, 4277, 6110, 6580, 8554, 12220, 17108, 21385, 42770

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 85520 and 85540. The biggest common factor number is the GCF number.
So the greatest common factor 85520 and 85540 is 20.

Also check out the Least Common Multiple of 85520 and 85540