A:
Positive:
1 x 156887055 x 313774117 x 92286585 x 184573379 x 41395487 x 322151895 x 82792435 x 6443
Negative:
-1 x -15688705-5 x -3137741-17 x -922865-85 x -184573-379 x -41395-487 x -32215-1895 x -8279-2435 x -6443
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 15,688,705, 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 | 15,688,705 | |
| -1 | -15,688,705 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,688,705.
Example:
1 x 15,688,705 = 15,688,705
and
-1 x -15,688,705 = 15,688,705
Notice both answers equal 15,688,705
With that explanation out of the way, let's continue. Next, we take the number 15,688,705 and divide it by 2:
15,688,705 ÷ 2 = 7,844,352.5
If the quotient is a whole number, then 2 and 7,844,352.5 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 | 15,688,705 | |
| -1 | -15,688,705 |
Now, we try dividing 15,688,705 by 3:
15,688,705 ÷ 3 = 5,229,568.3333
If the quotient is a whole number, then 3 and 5,229,568.3333 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 | 15,688,705 | |
| -1 | -15,688,705 |
Let's try dividing by 4:
15,688,705 ÷ 4 = 3,922,176.25
If the quotient is a whole number, then 4 and 3,922,176.25 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 | 15,688,705 | |
| -1 | 15,688,705 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 85 | 379 | 487 | 1,895 | 2,435 | 6,443 | 8,279 | 32,215 | 41,395 | 184,573 | 922,865 | 3,137,741 | 15,688,705 |
| -1 | -5 | -17 | -85 | -379 | -487 | -1,895 | -2,435 | -6,443 | -8,279 | -32,215 | -41,395 | -184,573 | -922,865 | -3,137,741 | -15,688,705 |
Here are some more numbers to try:
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