What is the Greatest Common Factor of 728 and 748?

Greatest common factor (GCF) of 728 and 748 is 4.

GCF(728,748) = 4

We will now calculate the prime factors of 728 and 748, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 728 and 748.

How to find the GCF of 728 and 748?

We will first find the prime factorization of 728 and 748. After we will calculate the factors of 728 and 748 and find the biggest common factor number .

Step-1: Prime Factorization of 728

Prime factors of 728 are 2, 7, 13. Prime factorization of 728 in exponential form is:

728 = 2³ × 7¹ × 13¹

Step-2: Prime Factorization of 748

Prime factors of 748 are 2, 11, 17. Prime factorization of 748 in exponential form is:

748 = 2² × 11¹ × 17¹

Step-3: Factors of 728

List of positive integer factors of 728 that divides 728 without a remainder.

1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364

Step-4: Factors of 748

List of positive integer factors of 748 that divides 728 without a remainder.

1, 2, 4, 11, 17, 22, 34, 44, 68, 187, 374

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 728 and 748. The biggest common factor number is the GCF number.
So the greatest common factor 728 and 748 is 4.

Also check out the Least Common Multiple of 728 and 748