Q: What are the factor combinations of the number 20,434,667?

 A:
Positive:   1 x 2043466711 x 185769789 x 229603979 x 20873
Negative: -1 x -20434667-11 x -1857697-89 x -229603-979 x -20873


How do I find the factor combinations of the number 20,434,667?

Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 20,434,667, it is easier to work with a table - it's called factoring from the outside in.

Outside in Factoring

We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.

1 20,434,667
-1 -20,434,667

Why are the negative numbers included?

When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,434,667.

Example:
1 x 20,434,667 = 20,434,667
and
-1 x -20,434,667 = 20,434,667
Notice both answers equal 20,434,667

With that explanation out of the way, let's continue. Next, we take the number 20,434,667 and divide it by 2:

20,434,667 ÷ 2 = 10,217,333.5

If the quotient is a whole number, then 2 and 10,217,333.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 20,434,667
-1 -20,434,667

Now, we try dividing 20,434,667 by 3:

20,434,667 ÷ 3 = 6,811,555.6667

If the quotient is a whole number, then 3 and 6,811,555.6667 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 20,434,667
-1 -20,434,667

Let's try dividing by 4:

20,434,667 ÷ 4 = 5,108,666.75

If the quotient is a whole number, then 4 and 5,108,666.75 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 20,434,667
-1 20,434,667
Keep dividing by the next highest number until you cannot divide anymore.

If you did it right, you will end up with this table:

1118997920,873229,6031,857,69720,434,667
-1-11-89-979-20,873-229,603-1,857,697-20,434,667

More Examples

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