Q: What are the factor combinations of the number 513,160,315?

 A:
Positive:   1 x 5131603155 x 102632063379 x 13539851895 x 270797
Negative: -1 x -513160315-5 x -102632063-379 x -1353985-1895 x -270797


How do I find the factor combinations of the number 513,160,315?

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 513,160,315, 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.

1 513,160,315
-1 -513,160,315

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 513,160,315.

Example:
1 x 513,160,315 = 513,160,315
and
-1 x -513,160,315 = 513,160,315
Notice both answers equal 513,160,315

With that explanation out of the way, let's continue. Next, we take the number 513,160,315 and divide it by 2:

513,160,315 ÷ 2 = 256,580,157.5

If the quotient is a whole number, then 2 and 256,580,157.5 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:

1 513,160,315
-1 -513,160,315

Now, we try dividing 513,160,315 by 3:

513,160,315 ÷ 3 = 171,053,438.3333

If the quotient is a whole number, then 3 and 171,053,438.3333 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:

1 513,160,315
-1 -513,160,315

Let's try dividing by 4:

513,160,315 ÷ 4 = 128,290,078.75

If the quotient is a whole number, then 4 and 128,290,078.75 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:

1 513,160,315
-1 513,160,315
Keep dividing by the next highest number until you cannot divide anymore.

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

153791,895270,7971,353,985102,632,063513,160,315
-1-5-379-1,895-270,797-1,353,985-102,632,063-513,160,315

More Examples

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