A:
Positive:
1 x 684571255 x 1369142511 x 622337525 x 273828555 x 1244675125 x 547657275 x 2489351375 x 49787
Negative:
-1 x -68457125-5 x -13691425-11 x -6223375-25 x -2738285-55 x -1244675-125 x -547657-275 x -248935-1375 x -49787
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 68,457,125, 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 | 68,457,125 | |
| -1 | -68,457,125 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 68,457,125.
Example:
1 x 68,457,125 = 68,457,125
and
-1 x -68,457,125 = 68,457,125
Notice both answers equal 68,457,125
With that explanation out of the way, let's continue. Next, we take the number 68,457,125 and divide it by 2:
68,457,125 ÷ 2 = 34,228,562.5
If the quotient is a whole number, then 2 and 34,228,562.5 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 | 68,457,125 | |
| -1 | -68,457,125 |
Now, we try dividing 68,457,125 by 3:
68,457,125 ÷ 3 = 22,819,041.6667
If the quotient is a whole number, then 3 and 22,819,041.6667 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 | 68,457,125 | |
| -1 | -68,457,125 |
Let's try dividing by 4:
68,457,125 ÷ 4 = 17,114,281.25
If the quotient is a whole number, then 4 and 17,114,281.25 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 | 68,457,125 | |
| -1 | 68,457,125 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 25 | 55 | 125 | 275 | 1,375 | 49,787 | 248,935 | 547,657 | 1,244,675 | 2,738,285 | 6,223,375 | 13,691,425 | 68,457,125 |
| -1 | -5 | -11 | -25 | -55 | -125 | -275 | -1,375 | -49,787 | -248,935 | -547,657 | -1,244,675 | -2,738,285 | -6,223,375 | -13,691,425 | -68,457,125 |
Here are some more numbers to try:
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