Greatest Common Factor of 680, 126, 606, 21

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

• Greatest Common Factor of 680, 126, 606, 21 by common division method
• Greatest Common Factor of 680, 126, 606, 21 with matching the biggest common factor

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∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 680

List of positive integer factors of 680 that divides 680 without a remainder.

1,2,4,5,8,10,17,20,34,40,68,85,136,170,340,680

Factors of 126

List of positive integer factors of 126 that divides 126 without a remainder.

1,2,3,6,7,9,14,18,21,42,63,126

Factors of 606

List of positive integer factors of 606 that divides 606 without a remainder.

1,2,3,6,101,202,303,606

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Greatest Common Factor

We found the factors 680,126,606,21 . The biggest common factor number is the GCF number.
So the greatest common factor 680,126,606,21 is 1.

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

• GCF of 434, 528, 103, 49
• GCF of 414, 647, 378, 78
• GCF of 711, 536, 398, 78
• GCF of 949, 272, 995, 52
• GCF of 357, 722, 282, 42

1. What is the GCF of 680, 126, 606, 21?

Answer: GCF of 680, 126, 606, 21 is 1.

2. How to Find the GCF of 680, 126, 606, 21

Answer: Greatest Common Factor(GCF) of 680, 126, 606, 21 = 1

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

Step 2: Then multiply all the prime factors GCF(680, 126, 606, 21) = 1.