Greatest Common Factor of 63, 42, 21, 487

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

• Greatest Common Factor of 63, 42, 21, 487 by common division method
• Greatest Common Factor of 63, 42, 21, 487 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 63

List of positive integer factors of 63 that divides 63 without a remainder.

1,3,7,9,21,63

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 21

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

1,3,7,21

Factors of 487

List of positive integer factors of 487 that divides 487 without a remainder.

1,487

Greatest Common Factor

We found the factors 63,42,21,487 . The biggest common factor number is the GCF number.
So the greatest common factor 63,42,21,487 is 1.

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

• GCF of 75, 31, 96, 165
• GCF of 36, 66, 83, 328
• GCF of 54, 35, 22, 131
• GCF of 57, 21, 80, 871
• GCF of 51, 19, 38, 594

1. What is the GCF of 63, 42, 21, 487?

Answer: GCF of 63, 42, 21, 487 is 1.

2. How to Find the GCF of 63, 42, 21, 487

Answer: Greatest Common Factor(GCF) of 63, 42, 21, 487 = 1

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

Step 2: Then multiply all the prime factors GCF(63, 42, 21, 487) = 1.