A:
Positive:
1 x 905873297 x 1294104729 x 312370149 x 1848721203 x 446243343 x 2641031301 x 696291421 x 637492401 x 377299107 x 9947
Negative:
-1 x -90587329-7 x -12941047-29 x -3123701-49 x -1848721-203 x -446243-343 x -264103-1301 x -69629-1421 x -63749-2401 x -37729-9107 x -9947
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 90,587,329, 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 | 90,587,329 | |
| -1 | -90,587,329 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 90,587,329.
Example:
1 x 90,587,329 = 90,587,329
and
-1 x -90,587,329 = 90,587,329
Notice both answers equal 90,587,329
With that explanation out of the way, let's continue. Next, we take the number 90,587,329 and divide it by 2:
90,587,329 ÷ 2 = 45,293,664.5
If the quotient is a whole number, then 2 and 45,293,664.5 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 | 90,587,329 | |
| -1 | -90,587,329 |
Now, we try dividing 90,587,329 by 3:
90,587,329 ÷ 3 = 30,195,776.3333
If the quotient is a whole number, then 3 and 30,195,776.3333 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 | 90,587,329 | |
| -1 | -90,587,329 |
Let's try dividing by 4:
90,587,329 ÷ 4 = 22,646,832.25
If the quotient is a whole number, then 4 and 22,646,832.25 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 | 90,587,329 | |
| -1 | 90,587,329 |
If you did it right, you will end up with this table:
| 1 | 7 | 29 | 49 | 203 | 343 | 1,301 | 1,421 | 2,401 | 9,107 | 9,947 | 37,729 | 63,749 | 69,629 | 264,103 | 446,243 | 1,848,721 | 3,123,701 | 12,941,047 | 90,587,329 |
| -1 | -7 | -29 | -49 | -203 | -343 | -1,301 | -1,421 | -2,401 | -9,107 | -9,947 | -37,729 | -63,749 | -69,629 | -264,103 | -446,243 | -1,848,721 | -3,123,701 | -12,941,047 | -90,587,329 |
Here are some more numbers to try:
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