Greatest Common Factor of 28, 287, 420

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

• Greatest Common Factor of 28, 287, 420 by common division method
• Greatest Common Factor of 28, 287, 420 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ So the GCF of the given numbers is 7 = 7

Factors of 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Factors of 287

List of positive integer factors of 287 that divides 287 without a remainder.

1,7,41,287

Factors of 420

List of positive integer factors of 420 that divides 420 without a remainder.

1,2,3,4,5,6,7,10,12,14,15,20,21,28,30,35,42,60,70,84,105,140,210,420

Greatest Common Factor

We found the factors 28,287,420 . The biggest common factor number is the GCF number.
So the greatest common factor 28,287,420 is 7.

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

• GCF of 72, 237, 429
• GCF of 58, 297, 772
• GCF of 72, 443, 460
• GCF of 66, 361, 221
• GCF of 56, 840, 923

1. What is the GCF of 28, 287, 420?

Answer: GCF of 28, 287, 420 is 7.

2. How to Find the GCF of 28, 287, 420

Answer: Greatest Common Factor(GCF) of 28, 287, 420 = 7

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

Step 2: Then multiply all the prime factors GCF(28, 287, 420) = 7.