A:
Positive:
1 x 287192297 x 410274711 x 261083941 x 70046977 x 372977121 x 237349287 x 100067451 x 63679827 x 34727847 x 339073157 x 90974961 x 5789
Negative:
-1 x -28719229-7 x -4102747-11 x -2610839-41 x -700469-77 x -372977-121 x -237349-287 x -100067-451 x -63679-827 x -34727-847 x -33907-3157 x -9097-4961 x -5789
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 28,719,229, 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 | 28,719,229 | |
| -1 | -28,719,229 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 28,719,229.
Example:
1 x 28,719,229 = 28,719,229
and
-1 x -28,719,229 = 28,719,229
Notice both answers equal 28,719,229
With that explanation out of the way, let's continue. Next, we take the number 28,719,229 and divide it by 2:
28,719,229 ÷ 2 = 14,359,614.5
If the quotient is a whole number, then 2 and 14,359,614.5 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 | 28,719,229 | |
| -1 | -28,719,229 |
Now, we try dividing 28,719,229 by 3:
28,719,229 ÷ 3 = 9,573,076.3333
If the quotient is a whole number, then 3 and 9,573,076.3333 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 | 28,719,229 | |
| -1 | -28,719,229 |
Let's try dividing by 4:
28,719,229 ÷ 4 = 7,179,807.25
If the quotient is a whole number, then 4 and 7,179,807.25 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 | 28,719,229 | |
| -1 | 28,719,229 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 41 | 77 | 121 | 287 | 451 | 827 | 847 | 3,157 | 4,961 | 5,789 | 9,097 | 33,907 | 34,727 | 63,679 | 100,067 | 237,349 | 372,977 | 700,469 | 2,610,839 | 4,102,747 | 28,719,229 |
| -1 | -7 | -11 | -41 | -77 | -121 | -287 | -451 | -827 | -847 | -3,157 | -4,961 | -5,789 | -9,097 | -33,907 | -34,727 | -63,679 | -100,067 | -237,349 | -372,977 | -700,469 | -2,610,839 | -4,102,747 | -28,719,229 |
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