A:
Positive:
1 x 12540865711 x 1140078767 x 1871771263 x 476839647 x 193831737 x 1701612893 x 433497117 x 17621
Negative:
-1 x -125408657-11 x -11400787-67 x -1871771-263 x -476839-647 x -193831-737 x -170161-2893 x -43349-7117 x -17621
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 125,408,657, 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 | 125,408,657 | |
| -1 | -125,408,657 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 125,408,657.
Example:
1 x 125,408,657 = 125,408,657
and
-1 x -125,408,657 = 125,408,657
Notice both answers equal 125,408,657
With that explanation out of the way, let's continue. Next, we take the number 125,408,657 and divide it by 2:
125,408,657 ÷ 2 = 62,704,328.5
If the quotient is a whole number, then 2 and 62,704,328.5 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 | 125,408,657 | |
| -1 | -125,408,657 |
Now, we try dividing 125,408,657 by 3:
125,408,657 ÷ 3 = 41,802,885.6667
If the quotient is a whole number, then 3 and 41,802,885.6667 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 | 125,408,657 | |
| -1 | -125,408,657 |
Let's try dividing by 4:
125,408,657 ÷ 4 = 31,352,164.25
If the quotient is a whole number, then 4 and 31,352,164.25 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 | 125,408,657 | |
| -1 | 125,408,657 |
If you did it right, you will end up with this table:
| 1 | 11 | 67 | 263 | 647 | 737 | 2,893 | 7,117 | 17,621 | 43,349 | 170,161 | 193,831 | 476,839 | 1,871,771 | 11,400,787 | 125,408,657 |
| -1 | -11 | -67 | -263 | -647 | -737 | -2,893 | -7,117 | -17,621 | -43,349 | -170,161 | -193,831 | -476,839 | -1,871,771 | -11,400,787 | -125,408,657 |
Here are some more numbers to try:
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