A:
Positive:
1 x 284885155 x 569770311 x 258986517 x 167579555 x 51797385 x 335159187 x 152345935 x 30469
Negative:
-1 x -28488515-5 x -5697703-11 x -2589865-17 x -1675795-55 x -517973-85 x -335159-187 x -152345-935 x -30469
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 28,488,515, 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 | 28,488,515 | |
| -1 | -28,488,515 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 28,488,515.
Example:
1 x 28,488,515 = 28,488,515
and
-1 x -28,488,515 = 28,488,515
Notice both answers equal 28,488,515
With that explanation out of the way, let's continue. Next, we take the number 28,488,515 and divide it by 2:
28,488,515 ÷ 2 = 14,244,257.5
If the quotient is a whole number, then 2 and 14,244,257.5 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 | 28,488,515 | |
| -1 | -28,488,515 |
Now, we try dividing 28,488,515 by 3:
28,488,515 ÷ 3 = 9,496,171.6667
If the quotient is a whole number, then 3 and 9,496,171.6667 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 | 28,488,515 | |
| -1 | -28,488,515 |
Let's try dividing by 4:
28,488,515 ÷ 4 = 7,122,128.75
If the quotient is a whole number, then 4 and 7,122,128.75 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 | 28,488,515 | |
| -1 | 28,488,515 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 17 | 55 | 85 | 187 | 935 | 30,469 | 152,345 | 335,159 | 517,973 | 1,675,795 | 2,589,865 | 5,697,703 | 28,488,515 |
| -1 | -5 | -11 | -17 | -55 | -85 | -187 | -935 | -30,469 | -152,345 | -335,159 | -517,973 | -1,675,795 | -2,589,865 | -5,697,703 | -28,488,515 |
Here are some more numbers to try:
Try the factor calculator