A:
Positive:
1 x 159173955 x 318347913 x 122441565 x 244883233 x 683151051 x 151451165 x 136633029 x 5255
Negative:
-1 x -15917395-5 x -3183479-13 x -1224415-65 x -244883-233 x -68315-1051 x -15145-1165 x -13663-3029 x -5255
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 15,917,395, 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 | 15,917,395 | |
| -1 | -15,917,395 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,917,395.
Example:
1 x 15,917,395 = 15,917,395
and
-1 x -15,917,395 = 15,917,395
Notice both answers equal 15,917,395
With that explanation out of the way, let's continue. Next, we take the number 15,917,395 and divide it by 2:
15,917,395 ÷ 2 = 7,958,697.5
If the quotient is a whole number, then 2 and 7,958,697.5 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 | 15,917,395 | |
| -1 | -15,917,395 |
Now, we try dividing 15,917,395 by 3:
15,917,395 ÷ 3 = 5,305,798.3333
If the quotient is a whole number, then 3 and 5,305,798.3333 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 | 15,917,395 | |
| -1 | -15,917,395 |
Let's try dividing by 4:
15,917,395 ÷ 4 = 3,979,348.75
If the quotient is a whole number, then 4 and 3,979,348.75 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 | 15,917,395 | |
| -1 | 15,917,395 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 233 | 1,051 | 1,165 | 3,029 | 5,255 | 13,663 | 15,145 | 68,315 | 244,883 | 1,224,415 | 3,183,479 | 15,917,395 |
| -1 | -5 | -13 | -65 | -233 | -1,051 | -1,165 | -3,029 | -5,255 | -13,663 | -15,145 | -68,315 | -244,883 | -1,224,415 | -3,183,479 | -15,917,395 |
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