A:
Positive:
1 x 408258137 x 583225919 x 214872789 x 458717133 x 306961623 x 655311691 x 241433449 x 11837
Negative:
-1 x -40825813-7 x -5832259-19 x -2148727-89 x -458717-133 x -306961-623 x -65531-1691 x -24143-3449 x -11837
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 40,825,813, 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 | 40,825,813 | |
| -1 | -40,825,813 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 40,825,813.
Example:
1 x 40,825,813 = 40,825,813
and
-1 x -40,825,813 = 40,825,813
Notice both answers equal 40,825,813
With that explanation out of the way, let's continue. Next, we take the number 40,825,813 and divide it by 2:
40,825,813 ÷ 2 = 20,412,906.5
If the quotient is a whole number, then 2 and 20,412,906.5 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 | 40,825,813 | |
| -1 | -40,825,813 |
Now, we try dividing 40,825,813 by 3:
40,825,813 ÷ 3 = 13,608,604.3333
If the quotient is a whole number, then 3 and 13,608,604.3333 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 | 40,825,813 | |
| -1 | -40,825,813 |
Let's try dividing by 4:
40,825,813 ÷ 4 = 10,206,453.25
If the quotient is a whole number, then 4 and 10,206,453.25 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 | 40,825,813 | |
| -1 | 40,825,813 |
If you did it right, you will end up with this table:
| 1 | 7 | 19 | 89 | 133 | 623 | 1,691 | 3,449 | 11,837 | 24,143 | 65,531 | 306,961 | 458,717 | 2,148,727 | 5,832,259 | 40,825,813 |
| -1 | -7 | -19 | -89 | -133 | -623 | -1,691 | -3,449 | -11,837 | -24,143 | -65,531 | -306,961 | -458,717 | -2,148,727 | -5,832,259 | -40,825,813 |
Here are some more numbers to try:
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