What is the Greatest Common Factor of 70940 and 70960?

Greatest common factor (GCF) of 70940 and 70960 is 20.

GCF(70940,70960) = 20

We will now calculate the prime factors of 70940 and 70960, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 70940 and 70960.

How to find the GCF of 70940 and 70960?

We will first find the prime factorization of 70940 and 70960. After we will calculate the factors of 70940 and 70960 and find the biggest common factor number .

Step-1: Prime Factorization of 70940

Prime factors of 70940 are 2, 5, 3547. Prime factorization of 70940 in exponential form is:

70940 = 2² × 5¹ × 3547¹

Step-2: Prime Factorization of 70960

Prime factors of 70960 are 2, 5, 887. Prime factorization of 70960 in exponential form is:

70960 = 2⁴ × 5¹ × 887¹

Step-3: Factors of 70940

List of positive integer factors of 70940 that divides 70940 without a remainder.

1, 2, 4, 5, 10, 20, 3547, 7094, 14188, 17735, 35470

Step-4: Factors of 70960

List of positive integer factors of 70960 that divides 70940 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 887, 1774, 3548, 4435, 7096, 8870, 14192, 17740, 35480

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 70940 and 70960. The biggest common factor number is the GCF number.
So the greatest common factor 70940 and 70960 is 20.

Also check out the Least Common Multiple of 70940 and 70960