A:
Positive:
1 x 3150711055 x 6301422143 x 7327235215 x 1465447409 x 7703452045 x 1540693583 x 8793517587 x 17915
Negative:
-1 x -315071105-5 x -63014221-43 x -7327235-215 x -1465447-409 x -770345-2045 x -154069-3583 x -87935-17587 x -17915
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 315,071,105, 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 | 315,071,105 | |
| -1 | -315,071,105 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 315,071,105.
Example:
1 x 315,071,105 = 315,071,105
and
-1 x -315,071,105 = 315,071,105
Notice both answers equal 315,071,105
With that explanation out of the way, let's continue. Next, we take the number 315,071,105 and divide it by 2:
315,071,105 ÷ 2 = 157,535,552.5
If the quotient is a whole number, then 2 and 157,535,552.5 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 | 315,071,105 | |
| -1 | -315,071,105 |
Now, we try dividing 315,071,105 by 3:
315,071,105 ÷ 3 = 105,023,701.6667
If the quotient is a whole number, then 3 and 105,023,701.6667 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 | 315,071,105 | |
| -1 | -315,071,105 |
Let's try dividing by 4:
315,071,105 ÷ 4 = 78,767,776.25
If the quotient is a whole number, then 4 and 78,767,776.25 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 | 315,071,105 | |
| -1 | 315,071,105 |
If you did it right, you will end up with this table:
| 1 | 5 | 43 | 215 | 409 | 2,045 | 3,583 | 17,587 | 17,915 | 87,935 | 154,069 | 770,345 | 1,465,447 | 7,327,235 | 63,014,221 | 315,071,105 |
| -1 | -5 | -43 | -215 | -409 | -2,045 | -3,583 | -17,587 | -17,915 | -87,935 | -154,069 | -770,345 | -1,465,447 | -7,327,235 | -63,014,221 | -315,071,105 |
Here are some more numbers to try:
Try the factor calculator