A:
Positive:
1 x 25413026317 x 1494883919 x 1337527767 x 3792989323 x 7867811139 x 2231171273 x 19963111743 x 21641
Negative:
-1 x -254130263-17 x -14948839-19 x -13375277-67 x -3792989-323 x -786781-1139 x -223117-1273 x -199631-11743 x -21641
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 254,130,263, 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 | 254,130,263 | |
| -1 | -254,130,263 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 254,130,263.
Example:
1 x 254,130,263 = 254,130,263
and
-1 x -254,130,263 = 254,130,263
Notice both answers equal 254,130,263
With that explanation out of the way, let's continue. Next, we take the number 254,130,263 and divide it by 2:
254,130,263 ÷ 2 = 127,065,131.5
If the quotient is a whole number, then 2 and 127,065,131.5 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 | 254,130,263 | |
| -1 | -254,130,263 |
Now, we try dividing 254,130,263 by 3:
254,130,263 ÷ 3 = 84,710,087.6667
If the quotient is a whole number, then 3 and 84,710,087.6667 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 | 254,130,263 | |
| -1 | -254,130,263 |
Let's try dividing by 4:
254,130,263 ÷ 4 = 63,532,565.75
If the quotient is a whole number, then 4 and 63,532,565.75 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 | 254,130,263 | |
| -1 | 254,130,263 |
If you did it right, you will end up with this table:
| 1 | 17 | 19 | 67 | 323 | 1,139 | 1,273 | 11,743 | 21,641 | 199,631 | 223,117 | 786,781 | 3,792,989 | 13,375,277 | 14,948,839 | 254,130,263 |
| -1 | -17 | -19 | -67 | -323 | -1,139 | -1,273 | -11,743 | -21,641 | -199,631 | -223,117 | -786,781 | -3,792,989 | -13,375,277 | -14,948,839 | -254,130,263 |
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