A:
Positive:
1 x 891581911 x 81052941 x 21745953 x 168223373 x 23903451 x 19769583 x 152932173 x 4103
Negative:
-1 x -8915819-11 x -810529-41 x -217459-53 x -168223-373 x -23903-451 x -19769-583 x -15293-2173 x -4103
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 8,915,819, 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 | 8,915,819 | |
| -1 | -8,915,819 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 8,915,819.
Example:
1 x 8,915,819 = 8,915,819
and
-1 x -8,915,819 = 8,915,819
Notice both answers equal 8,915,819
With that explanation out of the way, let's continue. Next, we take the number 8,915,819 and divide it by 2:
8,915,819 ÷ 2 = 4,457,909.5
If the quotient is a whole number, then 2 and 4,457,909.5 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 | 8,915,819 | |
| -1 | -8,915,819 |
Now, we try dividing 8,915,819 by 3:
8,915,819 ÷ 3 = 2,971,939.6667
If the quotient is a whole number, then 3 and 2,971,939.6667 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 | 8,915,819 | |
| -1 | -8,915,819 |
Let's try dividing by 4:
8,915,819 ÷ 4 = 2,228,954.75
If the quotient is a whole number, then 4 and 2,228,954.75 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 | 8,915,819 | |
| -1 | 8,915,819 |
If you did it right, you will end up with this table:
| 1 | 11 | 41 | 53 | 373 | 451 | 583 | 2,173 | 4,103 | 15,293 | 19,769 | 23,903 | 168,223 | 217,459 | 810,529 | 8,915,819 |
| -1 | -11 | -41 | -53 | -373 | -451 | -583 | -2,173 | -4,103 | -15,293 | -19,769 | -23,903 | -168,223 | -217,459 | -810,529 | -8,915,819 |
Here are some more numbers to try:
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