Greatest Common Factor of 840, 189, 45

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

• Greatest Common Factor of 840, 189, 45 by common division method
• Greatest Common Factor of 840, 189, 45 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ So the GCF of the given numbers is 3 = 3

Factors of 840

List of positive integer factors of 840 that divides 840 without a remainder.

1,2,3,4,5,6,7,8,10,12,14,15,20,21,24,28,30,35,40,42,56,60,70,84,105,120,140,168,210,280,420,840

Factors of 189

List of positive integer factors of 189 that divides 189 without a remainder.

1,3,7,9,21,27,63,189

Factors of 45

List of positive integer factors of 45 that divides 45 without a remainder.

1,3,5,9,15,45

Greatest Common Factor

We found the factors 840,189,45 . The biggest common factor number is the GCF number.
So the greatest common factor 840,189,45 is 3.

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

• GCF of 676, 310, 86
• GCF of 270, 571, 14
• GCF of 514, 524, 34
• GCF of 257, 399, 66
• GCF of 519, 336, 20

1. What is the GCF of 840, 189, 45?

Answer: GCF of 840, 189, 45 is 3.

2. How to Find the GCF of 840, 189, 45

Answer: Greatest Common Factor(GCF) of 840, 189, 45 = 3

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

Step 2: Then multiply all the prime factors GCF(840, 189, 45) = 3.