A:
Positive:
1 x 2881123311 x 261920341 x 702713193 x 149281331 x 87043451 x 638832123 x 135713641 x 7913
Negative:
-1 x -28811233-11 x -2619203-41 x -702713-193 x -149281-331 x -87043-451 x -63883-2123 x -13571-3641 x -7913
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 28,811,233, 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 | 28,811,233 | |
| -1 | -28,811,233 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 28,811,233.
Example:
1 x 28,811,233 = 28,811,233
and
-1 x -28,811,233 = 28,811,233
Notice both answers equal 28,811,233
With that explanation out of the way, let's continue. Next, we take the number 28,811,233 and divide it by 2:
28,811,233 ÷ 2 = 14,405,616.5
If the quotient is a whole number, then 2 and 14,405,616.5 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 | 28,811,233 | |
| -1 | -28,811,233 |
Now, we try dividing 28,811,233 by 3:
28,811,233 ÷ 3 = 9,603,744.3333
If the quotient is a whole number, then 3 and 9,603,744.3333 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 | 28,811,233 | |
| -1 | -28,811,233 |
Let's try dividing by 4:
28,811,233 ÷ 4 = 7,202,808.25
If the quotient is a whole number, then 4 and 7,202,808.25 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 | 28,811,233 | |
| -1 | 28,811,233 |
If you did it right, you will end up with this table:
| 1 | 11 | 41 | 193 | 331 | 451 | 2,123 | 3,641 | 7,913 | 13,571 | 63,883 | 87,043 | 149,281 | 702,713 | 2,619,203 | 28,811,233 |
| -1 | -11 | -41 | -193 | -331 | -451 | -2,123 | -3,641 | -7,913 | -13,571 | -63,883 | -87,043 | -149,281 | -702,713 | -2,619,203 | -28,811,233 |
Here are some more numbers to try:
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