Greatest Common Factor of 42, 63, 90, 861

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

• Greatest Common Factor of 42, 63, 90, 861 by common division method
• Greatest Common Factor of 42, 63, 90, 861 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 42

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

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

Factors of 63

List of positive integer factors of 63 that divides 63 without a remainder.

1,3,7,9,21,63

Factors of 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Factors of 861

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

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

Greatest Common Factor

We found the factors 42,63,90,861 . The biggest common factor number is the GCF number.
So the greatest common factor 42,63,90,861 is 3.

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

• GCF of 19, 27, 96, 766
• GCF of 91, 20, 60, 466
• GCF of 15, 60, 74, 694
• GCF of 44, 22, 45, 719
• GCF of 47, 15, 36, 622

1. What is the GCF of 42, 63, 90, 861?

Answer: GCF of 42, 63, 90, 861 is 3.

2. How to Find the GCF of 42, 63, 90, 861

Answer: Greatest Common Factor(GCF) of 42, 63, 90, 861 = 3

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

Step 2: Then multiply all the prime factors GCF(42, 63, 90, 861) = 3.