A:
Positive:
1 x 125132355 x 25026477 x 178760535 x 35752161 x 205135305 x 41027427 x 293052135 x 5861
Negative:
-1 x -12513235-5 x -2502647-7 x -1787605-35 x -357521-61 x -205135-305 x -41027-427 x -29305-2135 x -5861
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 12,513,235, it is easier to work with a table - it's called factoring from the outside in.
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 | 12,513,235 | |
| -1 | -12,513,235 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,513,235.
Example:
1 x 12,513,235 = 12,513,235
and
-1 x -12,513,235 = 12,513,235
Notice both answers equal 12,513,235
With that explanation out of the way, let's continue. Next, we take the number 12,513,235 and divide it by 2:
12,513,235 ÷ 2 = 6,256,617.5
If the quotient is a whole number, then 2 and 6,256,617.5 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 | 12,513,235 | |
| -1 | -12,513,235 |
Now, we try dividing 12,513,235 by 3:
12,513,235 ÷ 3 = 4,171,078.3333
If the quotient is a whole number, then 3 and 4,171,078.3333 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 | 12,513,235 | |
| -1 | -12,513,235 |
Let's try dividing by 4:
12,513,235 ÷ 4 = 3,128,308.75
If the quotient is a whole number, then 4 and 3,128,308.75 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 | 12,513,235 | |
| -1 | 12,513,235 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 61 | 305 | 427 | 2,135 | 5,861 | 29,305 | 41,027 | 205,135 | 357,521 | 1,787,605 | 2,502,647 | 12,513,235 |
| -1 | -5 | -7 | -35 | -61 | -305 | -427 | -2,135 | -5,861 | -29,305 | -41,027 | -205,135 | -357,521 | -1,787,605 | -2,502,647 | -12,513,235 |
Here are some more numbers to try:
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