Greatest Common Factor of 861, 616, 21

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

• Greatest Common Factor of 861, 616, 21 by common division method
• Greatest Common Factor of 861, 616, 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 861

List of positive integer factors of 861 that divides 861 without a remainder.

1,3,7,21,41,123,287,861

Factors of 616

List of positive integer factors of 616 that divides 616 without a remainder.

1,2,4,7,8,11,14,22,28,44,56,77,88,154,308,616

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 861,616,21 . The biggest common factor number is the GCF number.
So the greatest common factor 861,616,21 is 7.

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

• GCF of 651, 515, 81
• GCF of 422, 214, 13
• GCF of 523, 738, 20
• GCF of 244, 162, 54
• GCF of 848, 888, 25

1. What is the GCF of 861, 616, 21?

Answer: GCF of 861, 616, 21 is 7.

2. How to Find the GCF of 861, 616, 21

Answer: Greatest Common Factor(GCF) of 861, 616, 21 = 7

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

Step 2: Then multiply all the prime factors GCF(861, 616, 21) = 7.