Greatest Common Factor of 189, 1620, 690

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

• Greatest Common Factor of 189, 1620, 690 by common division method
• Greatest Common Factor of 189, 1620, 690 with matching the biggest common factor

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

Factors of 189

List of positive integer factors of 189 that divides 189 without a remainder.

1,3,7,9,21,27,63,189

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

Factors of 690

List of positive integer factors of 690 that divides 690 without a remainder.

1,2,3,5,6,10,15,23,30,46,69,115,138,230,345,690

Greatest Common Factor

We found the factors 189,1620,690 . The biggest common factor number is the GCF number.
So the greatest common factor 189,1620,690 is 3.

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

• GCF of 203, 6797, 318
• GCF of 266, 3007, 144
• GCF of 701, 7145, 391
• GCF of 173, 5614, 321
• GCF of 164, 5718, 133

1. What is the GCF of 189, 1620, 690?

Answer: GCF of 189, 1620, 690 is 3.

2. How to Find the GCF of 189, 1620, 690

Answer: Greatest Common Factor(GCF) of 189, 1620, 690 = 3

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

Step 2: Then multiply all the prime factors GCF(189, 1620, 690) = 3.