Greatest Common Factor of 21, 630, 721

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

• Greatest Common Factor of 21, 630, 721 by common division method
• Greatest Common Factor of 21, 630, 721 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 21

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

1,3,7,21

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 721

List of positive integer factors of 721 that divides 721 without a remainder.

1,7,103,721

Greatest Common Factor

We found the factors 21,630,721 . The biggest common factor number is the GCF number.
So the greatest common factor 21,630,721 is 7.

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

• GCF of 24, 847, 311
• GCF of 96, 318, 355
• GCF of 75, 771, 726
• GCF of 92, 236, 948
• GCF of 43, 661, 116

1. What is the GCF of 21, 630, 721?

Answer: GCF of 21, 630, 721 is 7.

2. How to Find the GCF of 21, 630, 721

Answer: Greatest Common Factor(GCF) of 21, 630, 721 = 7

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

Step 2: Then multiply all the prime factors GCF(21, 630, 721) = 7.