What is the Greatest Common Factor of 2820 and 2840?

Greatest common factor (GCF) of 2820 and 2840 is 20.

GCF(2820,2840) = 20

We will now calculate the prime factors of 2820 and 2840, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2820 and 2840.

How to find the GCF of 2820 and 2840?

We will first find the prime factorization of 2820 and 2840. After we will calculate the factors of 2820 and 2840 and find the biggest common factor number .

Step-1: Prime Factorization of 2820

Prime factors of 2820 are 2, 3, 5, 47. Prime factorization of 2820 in exponential form is:

2820 = 2² × 3¹ × 5¹ × 47¹

Step-2: Prime Factorization of 2840

Prime factors of 2840 are 2, 5, 71. Prime factorization of 2840 in exponential form is:

2840 = 2³ × 5¹ × 71¹

Step-3: Factors of 2820

List of positive integer factors of 2820 that divides 2820 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 47, 60, 94, 141, 188, 235, 282, 470, 564, 705, 940, 1410

Step-4: Factors of 2840

List of positive integer factors of 2840 that divides 2820 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2820 and 2840. The biggest common factor number is the GCF number.
So the greatest common factor 2820 and 2840 is 20.

Also check out the Least Common Multiple of 2820 and 2840