Greatest Common Factor of 42, 38, 16, 820

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

• Greatest Common Factor of 42, 38, 16, 820 by common division method
• Greatest Common Factor of 42, 38, 16, 820 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 42

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

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

Factors of 38

List of positive integer factors of 38 that divides 38 without a remainder.

1,2,19,38

Factors of 16

List of positive integer factors of 16 that divides 16 without a remainder.

1,2,4,8,16

Factors of 820

List of positive integer factors of 820 that divides 820 without a remainder.

1,2,4,5,10,20,41,82,164,205,410,820

Greatest Common Factor

We found the factors 42,38,16,820 . The biggest common factor number is the GCF number.
So the greatest common factor 42,38,16,820 is 2.

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

• GCF of 10, 97, 59, 682
• GCF of 61, 95, 33, 987
• GCF of 73, 21, 75, 240
• GCF of 21, 48, 22, 500
• GCF of 21, 93, 85, 345

1. What is the GCF of 42, 38, 16, 820?

Answer: GCF of 42, 38, 16, 820 is 2.

2. How to Find the GCF of 42, 38, 16, 820

Answer: Greatest Common Factor(GCF) of 42, 38, 16, 820 = 2

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

Step 2: Then multiply all the prime factors GCF(42, 38, 16, 820) = 2.