Greatest Common Factor of 1281, 1620

Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways

• Greatest Common Factor of 1281, 1620 by common division method
• Greatest Common Factor of 1281, 1620 with matching the biggest common factor

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∴ So the GCF of the given numbers is 3 = 3

Factors of 1281

List of positive integer factors of 1281 that divides 1281 without a remainder.

1,3,7,21,61,183,427,1281

Factors of 1620

List of positive integer factors of 1620 that divides 1620 without a remainder.

1,2,3,4,5,6,9,10,12,15,18,20,27,30,36,45,54,60,81,90,108,135,162,180,270,324,405,540,810,1620

Greatest Common Factor

We found the factors 1281,1620 . The biggest common factor number is the GCF number.
So the greatest common factor 1281,1620 is 3.

Here are some samples of GCF of two or more Numbers calculations.

• GCF of 5389, 8072
• GCF of 7749, 5977
• GCF of 9285, 6604
• GCF of 3506, 1608
• GCF of 7374, 3715

1. What is the GCF of 1281, 1620?

Answer: GCF of 1281, 1620 is 3.

2. How to Find the GCF of 1281, 1620

Answer: Greatest Common Factor(GCF) of 1281, 1620 = 3

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors GCF(1281, 1620) = 3.