A:
Positive:
1 x 285902897 x 408432713 x 219925391 x 314179211 x 1354991477 x 193571489 x 192012743 x 10423
Negative:
-1 x -28590289-7 x -4084327-13 x -2199253-91 x -314179-211 x -135499-1477 x -19357-1489 x -19201-2743 x -10423
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 28,590,289, 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 | 28,590,289 | |
| -1 | -28,590,289 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 28,590,289.
Example:
1 x 28,590,289 = 28,590,289
and
-1 x -28,590,289 = 28,590,289
Notice both answers equal 28,590,289
With that explanation out of the way, let's continue. Next, we take the number 28,590,289 and divide it by 2:
28,590,289 ÷ 2 = 14,295,144.5
If the quotient is a whole number, then 2 and 14,295,144.5 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 | 28,590,289 | |
| -1 | -28,590,289 |
Now, we try dividing 28,590,289 by 3:
28,590,289 ÷ 3 = 9,530,096.3333
If the quotient is a whole number, then 3 and 9,530,096.3333 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 | 28,590,289 | |
| -1 | -28,590,289 |
Let's try dividing by 4:
28,590,289 ÷ 4 = 7,147,572.25
If the quotient is a whole number, then 4 and 7,147,572.25 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 | 28,590,289 | |
| -1 | 28,590,289 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 91 | 211 | 1,477 | 1,489 | 2,743 | 10,423 | 19,201 | 19,357 | 135,499 | 314,179 | 2,199,253 | 4,084,327 | 28,590,289 |
| -1 | -7 | -13 | -91 | -211 | -1,477 | -1,489 | -2,743 | -10,423 | -19,201 | -19,357 | -135,499 | -314,179 | -2,199,253 | -4,084,327 | -28,590,289 |
Here are some more numbers to try:
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