Greatest Common Factor of 630, 287, 21

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

• Greatest Common Factor of 630, 287, 21 by common division method
• Greatest Common Factor of 630, 287, 21 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

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

Factors of 630

List of positive integer factors of 630 that divides 630 without a remainder.

1,2,3,5,6,7,9,10,14,15,18,21,30,35,42,45,63,70,90,105,126,210,315,630

Factors of 287

List of positive integer factors of 287 that divides 287 without a remainder.

1,7,41,287

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 630,287,21 . The biggest common factor number is the GCF number.
So the greatest common factor 630,287,21 is 7.

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

• GCF of 705, 386, 21
• GCF of 825, 161, 78
• GCF of 329, 973, 19
• GCF of 859, 118, 81
• GCF of 102, 176, 58

1. What is the GCF of 630, 287, 21?

Answer: GCF of 630, 287, 21 is 7.

2. How to Find the GCF of 630, 287, 21

Answer: Greatest Common Factor(GCF) of 630, 287, 21 = 7

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

Step 2: Then multiply all the prime factors GCF(630, 287, 21) = 7.