Greatest Common Factor of 45, 30, 72, 861

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

• Greatest Common Factor of 45, 30, 72, 861 by common division method
• Greatest Common Factor of 45, 30, 72, 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 45

List of positive integer factors of 45 that divides 45 without a remainder.

1,3,5,9,15,45

Factors of 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

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 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 45,30,72,861 . The biggest common factor number is the GCF number.
So the greatest common factor 45,30,72,861 is 3.

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

• GCF of 94, 66, 88, 193
• GCF of 43, 84, 63, 620
• GCF of 44, 54, 93, 381
• GCF of 99, 37, 97, 537
• GCF of 39, 52, 26, 712

1. What is the GCF of 45, 30, 72, 861?

Answer: GCF of 45, 30, 72, 861 is 3.

2. How to Find the GCF of 45, 30, 72, 861

Answer: Greatest Common Factor(GCF) of 45, 30, 72, 861 = 3

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

Step 2: Then multiply all the prime factors GCF(45, 30, 72, 861) = 3.