Greatest Common Factor of 34, 28, 42, 840

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

• Greatest Common Factor of 34, 28, 42, 840 by common division method
• Greatest Common Factor of 34, 28, 42, 840 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ So the GCF of the given numbers is 2 = 2

Factors of 34

List of positive integer factors of 34 that divides 34 without a remainder.

1,2,17,34

Factors of 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 840

List of positive integer factors of 840 that divides 840 without a remainder.

1,2,3,4,5,6,7,8,10,12,14,15,20,21,24,28,30,35,40,42,56,60,70,84,105,120,140,168,210,280,420,840

Greatest Common Factor

We found the factors 34,28,42,840 . The biggest common factor number is the GCF number.
So the greatest common factor 34,28,42,840 is 2.

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

• GCF of 44, 25, 70, 749
• GCF of 29, 95, 11, 968
• GCF of 76, 23, 83, 474
• GCF of 57, 58, 73, 997
• GCF of 65, 92, 69, 470

1. What is the GCF of 34, 28, 42, 840?

Answer: GCF of 34, 28, 42, 840 is 2.

2. How to Find the GCF of 34, 28, 42, 840

Answer: Greatest Common Factor(GCF) of 34, 28, 42, 840 = 2

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

Step 2: Then multiply all the prime factors GCF(34, 28, 42, 840) = 2.