A:
Positive:
1 x 1191556311 x 108323331 x 38437383 x 143561341 x 34943421 x 28303913 x 130512573 x 4631
Negative:
-1 x -11915563-11 x -1083233-31 x -384373-83 x -143561-341 x -34943-421 x -28303-913 x -13051-2573 x -4631
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 11,915,563, 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 | 11,915,563 | |
| -1 | -11,915,563 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 11,915,563.
Example:
1 x 11,915,563 = 11,915,563
and
-1 x -11,915,563 = 11,915,563
Notice both answers equal 11,915,563
With that explanation out of the way, let's continue. Next, we take the number 11,915,563 and divide it by 2:
11,915,563 ÷ 2 = 5,957,781.5
If the quotient is a whole number, then 2 and 5,957,781.5 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 | 11,915,563 | |
| -1 | -11,915,563 |
Now, we try dividing 11,915,563 by 3:
11,915,563 ÷ 3 = 3,971,854.3333
If the quotient is a whole number, then 3 and 3,971,854.3333 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 | 11,915,563 | |
| -1 | -11,915,563 |
Let's try dividing by 4:
11,915,563 ÷ 4 = 2,978,890.75
If the quotient is a whole number, then 4 and 2,978,890.75 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 | 11,915,563 | |
| -1 | 11,915,563 |
If you did it right, you will end up with this table:
| 1 | 11 | 31 | 83 | 341 | 421 | 913 | 2,573 | 4,631 | 13,051 | 28,303 | 34,943 | 143,561 | 384,373 | 1,083,233 | 11,915,563 |
| -1 | -11 | -31 | -83 | -341 | -421 | -913 | -2,573 | -4,631 | -13,051 | -28,303 | -34,943 | -143,561 | -384,373 | -1,083,233 | -11,915,563 |
Here are some more numbers to try:
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