What is the Greatest Common Factor of 74620 and 74640?

Greatest common factor (GCF) of 74620 and 74640 is 20.

GCF(74620,74640) = 20

We will now calculate the prime factors of 74620 and 74640, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 74620 and 74640.

How to find the GCF of 74620 and 74640?

We will first find the prime factorization of 74620 and 74640. After we will calculate the factors of 74620 and 74640 and find the biggest common factor number .

Step-1: Prime Factorization of 74620

Prime factors of 74620 are 2, 5, 7, 13, 41. Prime factorization of 74620 in exponential form is:

74620 = 2² × 5¹ × 7¹ × 13¹ × 41¹

Step-2: Prime Factorization of 74640

Prime factors of 74640 are 2, 3, 5, 311. Prime factorization of 74640 in exponential form is:

74640 = 2⁴ × 3¹ × 5¹ × 311¹

Step-3: Factors of 74620

List of positive integer factors of 74620 that divides 74620 without a remainder.

1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 41, 52, 65, 70, 82, 91, 130, 140, 164, 182, 205, 260, 287, 364, 410, 455, 533, 574, 820, 910, 1066, 1148, 1435, 1820, 2132, 2665, 2870, 3731, 5330, 5740, 7462, 10660, 14924, 18655, 37310

Step-4: Factors of 74640

List of positive integer factors of 74640 that divides 74620 without a remainder.

1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 311, 622, 933, 1244, 1555, 1866, 2488, 3110, 3732, 4665, 4976, 6220, 7464, 9330, 12440, 14928, 18660, 24880, 37320

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 74620 and 74640. The biggest common factor number is the GCF number.
So the greatest common factor 74620 and 74640 is 20.

Also check out the Least Common Multiple of 74620 and 74640