A:
Positive:
1 x 71745664111 x 6522333123 x 31193767253 x 2835797587 x 12222434831 x 1485116457 x 11111313501 x 53141
Negative:
-1 x -717456641-11 x -65223331-23 x -31193767-253 x -2835797-587 x -1222243-4831 x -148511-6457 x -111113-13501 x -53141
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 717,456,641, 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 | 717,456,641 | |
| -1 | -717,456,641 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 717,456,641.
Example:
1 x 717,456,641 = 717,456,641
and
-1 x -717,456,641 = 717,456,641
Notice both answers equal 717,456,641
With that explanation out of the way, let's continue. Next, we take the number 717,456,641 and divide it by 2:
717,456,641 ÷ 2 = 358,728,320.5
If the quotient is a whole number, then 2 and 358,728,320.5 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 | 717,456,641 | |
| -1 | -717,456,641 |
Now, we try dividing 717,456,641 by 3:
717,456,641 ÷ 3 = 239,152,213.6667
If the quotient is a whole number, then 3 and 239,152,213.6667 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 | 717,456,641 | |
| -1 | -717,456,641 |
Let's try dividing by 4:
717,456,641 ÷ 4 = 179,364,160.25
If the quotient is a whole number, then 4 and 179,364,160.25 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 | 717,456,641 | |
| -1 | 717,456,641 |
If you did it right, you will end up with this table:
| 1 | 11 | 23 | 253 | 587 | 4,831 | 6,457 | 13,501 | 53,141 | 111,113 | 148,511 | 1,222,243 | 2,835,797 | 31,193,767 | 65,223,331 | 717,456,641 |
| -1 | -11 | -23 | -253 | -587 | -4,831 | -6,457 | -13,501 | -53,141 | -111,113 | -148,511 | -1,222,243 | -2,835,797 | -31,193,767 | -65,223,331 | -717,456,641 |
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