Greatest Common Factor of 21, 10, 87, 972

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

• Greatest Common Factor of 21, 10, 87, 972 by common division method
• Greatest Common Factor of 21, 10, 87, 972 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

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

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 10

List of positive integer factors of 10 that divides 10 without a remainder.

1,2,5,10

Factors of 87

List of positive integer factors of 87 that divides 87 without a remainder.

1,3,29,87

Factors of 972

List of positive integer factors of 972 that divides 972 without a remainder.

1,2,3,4,6,9,12,18,27,36,54,81,108,162,243,324,486,972

Greatest Common Factor

We found the factors 21,10,87,972 . The biggest common factor number is the GCF number.
So the greatest common factor 21,10,87,972 is 1.

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

• GCF of 89, 38, 57, 817
• GCF of 75, 85, 20, 379
• GCF of 23, 59, 82, 335
• GCF of 17, 10, 40, 323
• GCF of 54, 85, 61, 438

1. What is the GCF of 21, 10, 87, 972?

Answer: GCF of 21, 10, 87, 972 is 1.

2. How to Find the GCF of 21, 10, 87, 972

Answer: Greatest Common Factor(GCF) of 21, 10, 87, 972 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 10, 87, 972) = 1.