Greatest Common Factor of 330, 21, 380, 646

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

• Greatest Common Factor of 330, 21, 380, 646 by common division method
• Greatest Common Factor of 330, 21, 380, 646 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 330

List of positive integer factors of 330 that divides 330 without a remainder.

1,2,3,5,6,10,11,15,22,30,33,55,66,110,165,330

Factors of 21

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

1,3,7,21

Factors of 380

List of positive integer factors of 380 that divides 380 without a remainder.

1,2,4,5,10,19,20,38,76,95,190,380

Factors of 646

List of positive integer factors of 646 that divides 646 without a remainder.

1,2,17,19,34,38,323,646

Greatest Common Factor

We found the factors 330,21,380,646 . The biggest common factor number is the GCF number.
So the greatest common factor 330,21,380,646 is 1.

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

• GCF of 244, 22, 754, 531
• GCF of 698, 72, 598, 392
• GCF of 454, 84, 708, 326
• GCF of 843, 56, 860, 633
• GCF of 849, 64, 216, 913

1. What is the GCF of 330, 21, 380, 646?

Answer: GCF of 330, 21, 380, 646 is 1.

2. How to Find the GCF of 330, 21, 380, 646

Answer: Greatest Common Factor(GCF) of 330, 21, 380, 646 = 1

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

Step 2: Then multiply all the prime factors GCF(330, 21, 380, 646) = 1.