Greatest Common Factor of 15, 18, 40, 560

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

• Greatest Common Factor of 15, 18, 40, 560 by common division method
• Greatest Common Factor of 15, 18, 40, 560 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 15

List of positive integer factors of 15 that divides 15 without a remainder.

1,3,5,15

Factors of 18

List of positive integer factors of 18 that divides 18 without a remainder.

1,2,3,6,9,18

Factors of 40

List of positive integer factors of 40 that divides 40 without a remainder.

1,2,4,5,8,10,20,40

Factors of 560

List of positive integer factors of 560 that divides 560 without a remainder.

1,2,4,5,7,8,10,14,16,20,28,35,40,56,70,80,112,140,280,560

Greatest Common Factor

We found the factors 15,18,40,560 . The biggest common factor number is the GCF number.
So the greatest common factor 15,18,40,560 is 1.

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

• GCF of 13, 43, 47, 211
• GCF of 62, 76, 72, 596
• GCF of 12, 79, 71, 870
• GCF of 65, 29, 65, 207
• GCF of 93, 21, 73, 637

1. What is the GCF of 15, 18, 40, 560?

Answer: GCF of 15, 18, 40, 560 is 1.

2. How to Find the GCF of 15, 18, 40, 560

Answer: Greatest Common Factor(GCF) of 15, 18, 40, 560 = 1

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

Step 2: Then multiply all the prime factors GCF(15, 18, 40, 560) = 1.