Greatest Common Factor of 28, 72, 480, 861

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

• Greatest Common Factor of 28, 72, 480, 861 by common division method
• Greatest Common Factor of 28, 72, 480, 861 with matching the biggest common factor

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∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 28

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

1,2,4,7,14,28

Factors of 72

List of positive integer factors of 72 that divides 72 without a remainder.

1,2,3,4,6,8,9,12,18,24,36,72

Factors of 480

List of positive integer factors of 480 that divides 480 without a remainder.

1,2,3,4,5,6,8,10,12,15,16,20,24,30,32,40,48,60,80,96,120,160,240,480

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 28,72,480,861 . The biggest common factor number is the GCF number.
So the greatest common factor 28,72,480,861 is 1.

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

• GCF of 42, 48, 946, 199
• GCF of 91, 30, 406, 213
• GCF of 93, 45, 729, 151
• GCF of 76, 83, 624, 998
• GCF of 88, 55, 795, 111

1. What is the GCF of 28, 72, 480, 861?

Answer: GCF of 28, 72, 480, 861 is 1.

2. How to Find the GCF of 28, 72, 480, 861

Answer: Greatest Common Factor(GCF) of 28, 72, 480, 861 = 1

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

Step 2: Then multiply all the prime factors GCF(28, 72, 480, 861) = 1.