A:
Positive:
1 x 972497911 x 88408919 x 51184131 x 31370979 x 123101209 x 46531341 x 28519361 x 26939589 x 16511869 x 111911501 x 64792449 x 3971
Negative:
-1 x -9724979-11 x -884089-19 x -511841-31 x -313709-79 x -123101-209 x -46531-341 x -28519-361 x -26939-589 x -16511-869 x -11191-1501 x -6479-2449 x -3971
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 9,724,979, 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 | 9,724,979 | |
| -1 | -9,724,979 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 9,724,979.
Example:
1 x 9,724,979 = 9,724,979
and
-1 x -9,724,979 = 9,724,979
Notice both answers equal 9,724,979
With that explanation out of the way, let's continue. Next, we take the number 9,724,979 and divide it by 2:
9,724,979 ÷ 2 = 4,862,489.5
If the quotient is a whole number, then 2 and 4,862,489.5 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 | 9,724,979 | |
| -1 | -9,724,979 |
Now, we try dividing 9,724,979 by 3:
9,724,979 ÷ 3 = 3,241,659.6667
If the quotient is a whole number, then 3 and 3,241,659.6667 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 | 9,724,979 | |
| -1 | -9,724,979 |
Let's try dividing by 4:
9,724,979 ÷ 4 = 2,431,244.75
If the quotient is a whole number, then 4 and 2,431,244.75 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 | 9,724,979 | |
| -1 | 9,724,979 |
If you did it right, you will end up with this table:
| 1 | 11 | 19 | 31 | 79 | 209 | 341 | 361 | 589 | 869 | 1,501 | 2,449 | 3,971 | 6,479 | 11,191 | 16,511 | 26,939 | 28,519 | 46,531 | 123,101 | 313,709 | 511,841 | 884,089 | 9,724,979 |
| -1 | -11 | -19 | -31 | -79 | -209 | -341 | -361 | -589 | -869 | -1,501 | -2,449 | -3,971 | -6,479 | -11,191 | -16,511 | -26,939 | -28,519 | -46,531 | -123,101 | -313,709 | -511,841 | -884,089 | -9,724,979 |
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