Greatest Common Factor of 685, 648, 672, 491, 138

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

• Greatest Common Factor of 685, 648, 672, 491, 138 by common division method
• Greatest Common Factor of 685, 648, 672, 491, 138 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 685

List of positive integer factors of 685 that divides 685 without a remainder.

1,5,137,685

Factors of 648

List of positive integer factors of 648 that divides 648 without a remainder.

1,2,3,4,6,8,9,12,18,24,27,36,54,72,81,108,162,216,324,648

Factors of 672

List of positive integer factors of 672 that divides 672 without a remainder.

1,2,3,4,6,7,8,12,14,16,21,24,28,32,42,48,56,84,96,112,168,224,336,672

Factors of 491

List of positive integer factors of 491 that divides 491 without a remainder.

1,491

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 685,648,672,491,138 . The biggest common factor number is the GCF number.
So the greatest common factor 685,648,672,491,138 is 1.

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

• GCF of 311, 800, 733, 839, 706
• GCF of 905, 827, 190, 603, 125
• GCF of 256, 343, 265, 794, 427
• GCF of 822, 710, 932, 381, 846
• GCF of 998, 824, 690, 523, 385

1. What is the GCF of 685, 648, 672, 491, 138?

Answer: GCF of 685, 648, 672, 491, 138 is 1.

2. How to Find the GCF of 685, 648, 672, 491, 138

Answer: Greatest Common Factor(GCF) of 685, 648, 672, 491, 138 = 1

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

Step 2: Then multiply all the prime factors GCF(685, 648, 672, 491, 138) = 1.