A:
Positive:
1 x 66716354913 x 5132027319 x 35113871197 x 3386617247 x 27010672561 x 2605093743 x 17824313711 x 48659
Negative:
-1 x -667163549-13 x -51320273-19 x -35113871-197 x -3386617-247 x -2701067-2561 x -260509-3743 x -178243-13711 x -48659
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 667,163,549, 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 | 667,163,549 | |
| -1 | -667,163,549 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 667,163,549.
Example:
1 x 667,163,549 = 667,163,549
and
-1 x -667,163,549 = 667,163,549
Notice both answers equal 667,163,549
With that explanation out of the way, let's continue. Next, we take the number 667,163,549 and divide it by 2:
667,163,549 ÷ 2 = 333,581,774.5
If the quotient is a whole number, then 2 and 333,581,774.5 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 | 667,163,549 | |
| -1 | -667,163,549 |
Now, we try dividing 667,163,549 by 3:
667,163,549 ÷ 3 = 222,387,849.6667
If the quotient is a whole number, then 3 and 222,387,849.6667 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 | 667,163,549 | |
| -1 | -667,163,549 |
Let's try dividing by 4:
667,163,549 ÷ 4 = 166,790,887.25
If the quotient is a whole number, then 4 and 166,790,887.25 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 | 667,163,549 | |
| -1 | 667,163,549 |
If you did it right, you will end up with this table:
| 1 | 13 | 19 | 197 | 247 | 2,561 | 3,743 | 13,711 | 48,659 | 178,243 | 260,509 | 2,701,067 | 3,386,617 | 35,113,871 | 51,320,273 | 667,163,549 |
| -1 | -13 | -19 | -197 | -247 | -2,561 | -3,743 | -13,711 | -48,659 | -178,243 | -260,509 | -2,701,067 | -3,386,617 | -35,113,871 | -51,320,273 | -667,163,549 |
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