What is the Greatest Common Factor of 31960 and 31980?

Greatest common factor (GCF) of 31960 and 31980 is 20.

GCF(31960,31980) = 20

We will now calculate the prime factors of 31960 and 31980, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 31960 and 31980.

How to find the GCF of 31960 and 31980?

We will first find the prime factorization of 31960 and 31980. After we will calculate the factors of 31960 and 31980 and find the biggest common factor number .

Step-1: Prime Factorization of 31960

Prime factors of 31960 are 2, 5, 17, 47. Prime factorization of 31960 in exponential form is:

31960 = 2³ × 5¹ × 17¹ × 47¹

Step-2: Prime Factorization of 31980

Prime factors of 31980 are 2, 3, 5, 13, 41. Prime factorization of 31980 in exponential form is:

31980 = 2² × 3¹ × 5¹ × 13¹ × 41¹

Step-3: Factors of 31960

List of positive integer factors of 31960 that divides 31960 without a remainder.

1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 47, 68, 85, 94, 136, 170, 188, 235, 340, 376, 470, 680, 799, 940, 1598, 1880, 3196, 3995, 6392, 7990, 15980

Step-4: Factors of 31980

List of positive integer factors of 31980 that divides 31960 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 41, 52, 60, 65, 78, 82, 123, 130, 156, 164, 195, 205, 246, 260, 390, 410, 492, 533, 615, 780, 820, 1066, 1230, 1599, 2132, 2460, 2665, 3198, 5330, 6396, 7995, 10660, 15990

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 31960 and 31980. The biggest common factor number is the GCF number.
So the greatest common factor 31960 and 31980 is 20.

Also check out the Least Common Multiple of 31960 and 31980