A:
Positive:
1 x 2860476717 x 4086395313 x 2200366791 x 31433811151 x 2485212731 x 1047418057 x 3550314963 x 19117
Negative:
-1 x -286047671-7 x -40863953-13 x -22003667-91 x -3143381-1151 x -248521-2731 x -104741-8057 x -35503-14963 x -19117
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 286,047,671, 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 | 286,047,671 | |
| -1 | -286,047,671 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 286,047,671.
Example:
1 x 286,047,671 = 286,047,671
and
-1 x -286,047,671 = 286,047,671
Notice both answers equal 286,047,671
With that explanation out of the way, let's continue. Next, we take the number 286,047,671 and divide it by 2:
286,047,671 ÷ 2 = 143,023,835.5
If the quotient is a whole number, then 2 and 143,023,835.5 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 | 286,047,671 | |
| -1 | -286,047,671 |
Now, we try dividing 286,047,671 by 3:
286,047,671 ÷ 3 = 95,349,223.6667
If the quotient is a whole number, then 3 and 95,349,223.6667 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 | 286,047,671 | |
| -1 | -286,047,671 |
Let's try dividing by 4:
286,047,671 ÷ 4 = 71,511,917.75
If the quotient is a whole number, then 4 and 71,511,917.75 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 | 286,047,671 | |
| -1 | 286,047,671 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 91 | 1,151 | 2,731 | 8,057 | 14,963 | 19,117 | 35,503 | 104,741 | 248,521 | 3,143,381 | 22,003,667 | 40,863,953 | 286,047,671 |
| -1 | -7 | -13 | -91 | -1,151 | -2,731 | -8,057 | -14,963 | -19,117 | -35,503 | -104,741 | -248,521 | -3,143,381 | -22,003,667 | -40,863,953 | -286,047,671 |
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