A:
Positive:
1 x 4330789111 x 393708117 x 2547523101 x 428791187 x 2315931111 x 389811717 x 252232293 x 18887
Negative:
-1 x -43307891-11 x -3937081-17 x -2547523-101 x -428791-187 x -231593-1111 x -38981-1717 x -25223-2293 x -18887
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 43,307,891, 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 | 43,307,891 | |
| -1 | -43,307,891 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 43,307,891.
Example:
1 x 43,307,891 = 43,307,891
and
-1 x -43,307,891 = 43,307,891
Notice both answers equal 43,307,891
With that explanation out of the way, let's continue. Next, we take the number 43,307,891 and divide it by 2:
43,307,891 ÷ 2 = 21,653,945.5
If the quotient is a whole number, then 2 and 21,653,945.5 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 | 43,307,891 | |
| -1 | -43,307,891 |
Now, we try dividing 43,307,891 by 3:
43,307,891 ÷ 3 = 14,435,963.6667
If the quotient is a whole number, then 3 and 14,435,963.6667 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 | 43,307,891 | |
| -1 | -43,307,891 |
Let's try dividing by 4:
43,307,891 ÷ 4 = 10,826,972.75
If the quotient is a whole number, then 4 and 10,826,972.75 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 | 43,307,891 | |
| -1 | 43,307,891 |
If you did it right, you will end up with this table:
| 1 | 11 | 17 | 101 | 187 | 1,111 | 1,717 | 2,293 | 18,887 | 25,223 | 38,981 | 231,593 | 428,791 | 2,547,523 | 3,937,081 | 43,307,891 |
| -1 | -11 | -17 | -101 | -187 | -1,111 | -1,717 | -2,293 | -18,887 | -25,223 | -38,981 | -231,593 | -428,791 | -2,547,523 | -3,937,081 | -43,307,891 |
Here are some more numbers to try:
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