A:
Positive:
1 x 231912855 x 463825713 x 178394561 x 38018565 x 356789305 x 76037793 x 292453965 x 5849
Negative:
-1 x -23191285-5 x -4638257-13 x -1783945-61 x -380185-65 x -356789-305 x -76037-793 x -29245-3965 x -5849
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 23,191,285, 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 | 23,191,285 | |
| -1 | -23,191,285 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 23,191,285.
Example:
1 x 23,191,285 = 23,191,285
and
-1 x -23,191,285 = 23,191,285
Notice both answers equal 23,191,285
With that explanation out of the way, let's continue. Next, we take the number 23,191,285 and divide it by 2:
23,191,285 ÷ 2 = 11,595,642.5
If the quotient is a whole number, then 2 and 11,595,642.5 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 | 23,191,285 | |
| -1 | -23,191,285 |
Now, we try dividing 23,191,285 by 3:
23,191,285 ÷ 3 = 7,730,428.3333
If the quotient is a whole number, then 3 and 7,730,428.3333 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 | 23,191,285 | |
| -1 | -23,191,285 |
Let's try dividing by 4:
23,191,285 ÷ 4 = 5,797,821.25
If the quotient is a whole number, then 4 and 5,797,821.25 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 | 23,191,285 | |
| -1 | 23,191,285 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 61 | 65 | 305 | 793 | 3,965 | 5,849 | 29,245 | 76,037 | 356,789 | 380,185 | 1,783,945 | 4,638,257 | 23,191,285 |
| -1 | -5 | -13 | -61 | -65 | -305 | -793 | -3,965 | -5,849 | -29,245 | -76,037 | -356,789 | -380,185 | -1,783,945 | -4,638,257 | -23,191,285 |
Here are some more numbers to try:
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