Greatest Common Factor of 644, 217, 987

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

• Greatest Common Factor of 644, 217, 987 by common division method
• Greatest Common Factor of 644, 217, 987 with matching the biggest common factor

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∴ So the GCF of the given numbers is 7 = 7

Factors of 644

List of positive integer factors of 644 that divides 644 without a remainder.

1,2,4,7,14,23,28,46,92,161,322,644

Factors of 217

List of positive integer factors of 217 that divides 217 without a remainder.

1,7,31,217

Factors of 987

List of positive integer factors of 987 that divides 987 without a remainder.

1,3,7,21,47,141,329,987

Greatest Common Factor

We found the factors 644,217,987 . The biggest common factor number is the GCF number.
So the greatest common factor 644,217,987 is 7.

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

• GCF of 671, 826, 356
• GCF of 826, 652, 189
• GCF of 528, 591, 427
• GCF of 148, 632, 749
• GCF of 683, 519, 559

1. What is the GCF of 644, 217, 987?

Answer: GCF of 644, 217, 987 is 7.

2. How to Find the GCF of 644, 217, 987

Answer: Greatest Common Factor(GCF) of 644, 217, 987 = 7

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

Step 2: Then multiply all the prime factors GCF(644, 217, 987) = 7.