A:
Positive:
1 x 312885797 x 446979723 x 136037331 x 1009309161 x 194339217 x 144187713 x 438834991 x 6269
Negative:
-1 x -31288579-7 x -4469797-23 x -1360373-31 x -1009309-161 x -194339-217 x -144187-713 x -43883-4991 x -6269
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 31,288,579, 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 | 31,288,579 | |
| -1 | -31,288,579 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 31,288,579.
Example:
1 x 31,288,579 = 31,288,579
and
-1 x -31,288,579 = 31,288,579
Notice both answers equal 31,288,579
With that explanation out of the way, let's continue. Next, we take the number 31,288,579 and divide it by 2:
31,288,579 ÷ 2 = 15,644,289.5
If the quotient is a whole number, then 2 and 15,644,289.5 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 | 31,288,579 | |
| -1 | -31,288,579 |
Now, we try dividing 31,288,579 by 3:
31,288,579 ÷ 3 = 10,429,526.3333
If the quotient is a whole number, then 3 and 10,429,526.3333 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 | 31,288,579 | |
| -1 | -31,288,579 |
Let's try dividing by 4:
31,288,579 ÷ 4 = 7,822,144.75
If the quotient is a whole number, then 4 and 7,822,144.75 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 | 31,288,579 | |
| -1 | 31,288,579 |
If you did it right, you will end up with this table:
| 1 | 7 | 23 | 31 | 161 | 217 | 713 | 4,991 | 6,269 | 43,883 | 144,187 | 194,339 | 1,009,309 | 1,360,373 | 4,469,797 | 31,288,579 |
| -1 | -7 | -23 | -31 | -161 | -217 | -713 | -4,991 | -6,269 | -43,883 | -144,187 | -194,339 | -1,009,309 | -1,360,373 | -4,469,797 | -31,288,579 |
Here are some more numbers to try:
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