A:
Positive:
1 x 20484228713 x 1575709919 x 10781173193 x 1061359247 x 8293212509 x 816433667 x 558614297 x 47671
Negative:
-1 x -204842287-13 x -15757099-19 x -10781173-193 x -1061359-247 x -829321-2509 x -81643-3667 x -55861-4297 x -47671
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 204,842,287, 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 | 204,842,287 | |
| -1 | -204,842,287 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 204,842,287.
Example:
1 x 204,842,287 = 204,842,287
and
-1 x -204,842,287 = 204,842,287
Notice both answers equal 204,842,287
With that explanation out of the way, let's continue. Next, we take the number 204,842,287 and divide it by 2:
204,842,287 ÷ 2 = 102,421,143.5
If the quotient is a whole number, then 2 and 102,421,143.5 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 | 204,842,287 | |
| -1 | -204,842,287 |
Now, we try dividing 204,842,287 by 3:
204,842,287 ÷ 3 = 68,280,762.3333
If the quotient is a whole number, then 3 and 68,280,762.3333 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 | 204,842,287 | |
| -1 | -204,842,287 |
Let's try dividing by 4:
204,842,287 ÷ 4 = 51,210,571.75
If the quotient is a whole number, then 4 and 51,210,571.75 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 | 204,842,287 | |
| -1 | 204,842,287 |
If you did it right, you will end up with this table:
| 1 | 13 | 19 | 193 | 247 | 2,509 | 3,667 | 4,297 | 47,671 | 55,861 | 81,643 | 829,321 | 1,061,359 | 10,781,173 | 15,757,099 | 204,842,287 |
| -1 | -13 | -19 | -193 | -247 | -2,509 | -3,667 | -4,297 | -47,671 | -55,861 | -81,643 | -829,321 | -1,061,359 | -10,781,173 | -15,757,099 | -204,842,287 |
Here are some more numbers to try:
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