Greatest Common Factor of 445, 438, 21, 891

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

• Greatest Common Factor of 445, 438, 21, 891 by common division method
• Greatest Common Factor of 445, 438, 21, 891 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 445

List of positive integer factors of 445 that divides 445 without a remainder.

1,5,89,445

Factors of 438

List of positive integer factors of 438 that divides 438 without a remainder.

1,2,3,6,73,146,219,438

Factors of 21

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

1,3,7,21

Factors of 891

List of positive integer factors of 891 that divides 891 without a remainder.

1,3,9,11,27,33,81,99,297,891

Greatest Common Factor

We found the factors 445,438,21,891 . The biggest common factor number is the GCF number.
So the greatest common factor 445,438,21,891 is 1.

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

• GCF of 295, 683, 47, 837
• GCF of 593, 508, 18, 604
• GCF of 198, 598, 81, 950
• GCF of 981, 877, 19, 838
• GCF of 288, 299, 80, 439

1. What is the GCF of 445, 438, 21, 891?

Answer: GCF of 445, 438, 21, 891 is 1.

2. How to Find the GCF of 445, 438, 21, 891

Answer: Greatest Common Factor(GCF) of 445, 438, 21, 891 = 1

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

Step 2: Then multiply all the prime factors GCF(445, 438, 21, 891) = 1.