Greatest Common Factor of 21, 30, 59, 71, 490

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

• Greatest Common Factor of 21, 30, 59, 71, 490 by common division method
• Greatest Common Factor of 21, 30, 59, 71, 490 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 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Factors of 59

List of positive integer factors of 59 that divides 59 without a remainder.

1,59

Factors of 71

List of positive integer factors of 71 that divides 71 without a remainder.

1,71

Factors of 490

List of positive integer factors of 490 that divides 490 without a remainder.

1,2,5,7,10,14,35,49,70,98,245,490

Greatest Common Factor

We found the factors 21,30,59,71,490 . The biggest common factor number is the GCF number.
So the greatest common factor 21,30,59,71,490 is 1.

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

• GCF of 71, 59, 53, 52, 315
• GCF of 67, 42, 34, 29, 187
• GCF of 20, 38, 89, 66, 442
• GCF of 35, 60, 83, 41, 410
• GCF of 27, 59, 12, 77, 227

1. What is the GCF of 21, 30, 59, 71, 490?

Answer: GCF of 21, 30, 59, 71, 490 is 1.

2. How to Find the GCF of 21, 30, 59, 71, 490

Answer: Greatest Common Factor(GCF) of 21, 30, 59, 71, 490 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 30, 59, 71, 490) = 1.