Greatest Common Factor of 686, 428, 138

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

• Greatest Common Factor of 686, 428, 138 by common division method
• Greatest Common Factor of 686, 428, 138 with matching the biggest common factor

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∴ So the GCF of the given numbers is 2 = 2

Factors of 686

List of positive integer factors of 686 that divides 686 without a remainder.

1,2,7,14,49,98,343,686

Factors of 428

List of positive integer factors of 428 that divides 428 without a remainder.

1,2,4,107,214,428

Factors of 138

List of positive integer factors of 138 that divides 138 without a remainder.

1,2,3,6,23,46,69,138

Greatest Common Factor

We found the factors 686,428,138 . The biggest common factor number is the GCF number.
So the greatest common factor 686,428,138 is 2.

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

• GCF of 332, 168, 548
• GCF of 387, 999, 678
• GCF of 960, 374, 923
• GCF of 868, 240, 578
• GCF of 441, 480, 480

1. What is the GCF of 686, 428, 138?

Answer: GCF of 686, 428, 138 is 2.

2. How to Find the GCF of 686, 428, 138

Answer: Greatest Common Factor(GCF) of 686, 428, 138 = 2

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

Step 2: Then multiply all the prime factors GCF(686, 428, 138) = 2.