Greatest Common Factor of 21, 78, 96, 561

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

• Greatest Common Factor of 21, 78, 96, 561 by common division method
• Greatest Common Factor of 21, 78, 96, 561 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ So the GCF of the given numbers is 3 = 3

Factors of 21

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

1,3,7,21

Factors of 78

List of positive integer factors of 78 that divides 78 without a remainder.

1,2,3,6,13,26,39,78

Factors of 96

List of positive integer factors of 96 that divides 96 without a remainder.

1,2,3,4,6,8,12,16,24,32,48,96

Factors of 561

List of positive integer factors of 561 that divides 561 without a remainder.

1,3,11,17,33,51,187,561

Greatest Common Factor

We found the factors 21,78,96,561 . The biggest common factor number is the GCF number.
So the greatest common factor 21,78,96,561 is 3.

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

• GCF of 36, 91, 58, 376
• GCF of 21, 46, 43, 681
• GCF of 80, 30, 49, 433
• GCF of 45, 46, 37, 379
• GCF of 48, 73, 13, 516

1. What is the GCF of 21, 78, 96, 561?

Answer: GCF of 21, 78, 96, 561 is 3.

2. How to Find the GCF of 21, 78, 96, 561

Answer: Greatest Common Factor(GCF) of 21, 78, 96, 561 = 3

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

Step 2: Then multiply all the prime factors GCF(21, 78, 96, 561) = 3.