Greatest Common Factor of 15, 72, 40, 977

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

• Greatest Common Factor of 15, 72, 40, 977 by common division method
• Greatest Common Factor of 15, 72, 40, 977 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 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 40

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

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

Factors of 977

List of positive integer factors of 977 that divides 977 without a remainder.

1,977

Greatest Common Factor

We found the factors 15,72,40,977 . The biggest common factor number is the GCF number.
So the greatest common factor 15,72,40,977 is 1.

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

• GCF of 16, 21, 54, 131
• GCF of 85, 96, 21, 458
• GCF of 24, 67, 67, 806
• GCF of 91, 94, 90, 129
• GCF of 39, 78, 89, 255

1. What is the GCF of 15, 72, 40, 977?

Answer: GCF of 15, 72, 40, 977 is 1.

2. How to Find the GCF of 15, 72, 40, 977

Answer: Greatest Common Factor(GCF) of 15, 72, 40, 977 = 1

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

Step 2: Then multiply all the prime factors GCF(15, 72, 40, 977) = 1.