A:
Positive:
1 x 919888717 x 54111129 x 31720347 x 195721397 x 23171493 x 18659799 x 115131363 x 6749
Negative:
-1 x -9198887-17 x -541111-29 x -317203-47 x -195721-397 x -23171-493 x -18659-799 x -11513-1363 x -6749
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 9,198,887, 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 | 9,198,887 | |
| -1 | -9,198,887 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 9,198,887.
Example:
1 x 9,198,887 = 9,198,887
and
-1 x -9,198,887 = 9,198,887
Notice both answers equal 9,198,887
With that explanation out of the way, let's continue. Next, we take the number 9,198,887 and divide it by 2:
9,198,887 ÷ 2 = 4,599,443.5
If the quotient is a whole number, then 2 and 4,599,443.5 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 | 9,198,887 | |
| -1 | -9,198,887 |
Now, we try dividing 9,198,887 by 3:
9,198,887 ÷ 3 = 3,066,295.6667
If the quotient is a whole number, then 3 and 3,066,295.6667 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 | 9,198,887 | |
| -1 | -9,198,887 |
Let's try dividing by 4:
9,198,887 ÷ 4 = 2,299,721.75
If the quotient is a whole number, then 4 and 2,299,721.75 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 | 9,198,887 | |
| -1 | 9,198,887 |
If you did it right, you will end up with this table:
| 1 | 17 | 29 | 47 | 397 | 493 | 799 | 1,363 | 6,749 | 11,513 | 18,659 | 23,171 | 195,721 | 317,203 | 541,111 | 9,198,887 |
| -1 | -17 | -29 | -47 | -397 | -493 | -799 | -1,363 | -6,749 | -11,513 | -18,659 | -23,171 | -195,721 | -317,203 | -541,111 | -9,198,887 |
Here are some more numbers to try:
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