Greatest Common Factor of 105, 342, 21

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

• Greatest Common Factor of 105, 342, 21 by common division method
• Greatest Common Factor of 105, 342, 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 3 = 3

Factors of 105

List of positive integer factors of 105 that divides 105 without a remainder.

1,3,5,7,15,21,35,105

Factors of 342

List of positive integer factors of 342 that divides 342 without a remainder.

1,2,3,6,9,18,19,38,57,114,171,342

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 105,342,21 . The biggest common factor number is the GCF number.
So the greatest common factor 105,342,21 is 3.

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

• GCF of 256, 585, 25
• GCF of 942, 601, 89
• GCF of 412, 139, 37
• GCF of 194, 948, 90
• GCF of 731, 261, 50

1. What is the GCF of 105, 342, 21?

Answer: GCF of 105, 342, 21 is 3.

2. How to Find the GCF of 105, 342, 21

Answer: Greatest Common Factor(GCF) of 105, 342, 21 = 3

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

Step 2: Then multiply all the prime factors GCF(105, 342, 21) = 3.