A:
Positive:
1 x 315731911 x 28702931 x 10184947 x 67177197 x 16027341 x 9259517 x 61071457 x 2167
Negative:
-1 x -3157319-11 x -287029-31 x -101849-47 x -67177-197 x -16027-341 x -9259-517 x -6107-1457 x -2167
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 3,157,319, 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 | 3,157,319 | |
| -1 | -3,157,319 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,157,319.
Example:
1 x 3,157,319 = 3,157,319
and
-1 x -3,157,319 = 3,157,319
Notice both answers equal 3,157,319
With that explanation out of the way, let's continue. Next, we take the number 3,157,319 and divide it by 2:
3,157,319 ÷ 2 = 1,578,659.5
If the quotient is a whole number, then 2 and 1,578,659.5 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 | 3,157,319 | |
| -1 | -3,157,319 |
Now, we try dividing 3,157,319 by 3:
3,157,319 ÷ 3 = 1,052,439.6667
If the quotient is a whole number, then 3 and 1,052,439.6667 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 | 3,157,319 | |
| -1 | -3,157,319 |
Let's try dividing by 4:
3,157,319 ÷ 4 = 789,329.75
If the quotient is a whole number, then 4 and 789,329.75 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 | 3,157,319 | |
| -1 | 3,157,319 |
If you did it right, you will end up with this table:
| 1 | 11 | 31 | 47 | 197 | 341 | 517 | 1,457 | 2,167 | 6,107 | 9,259 | 16,027 | 67,177 | 101,849 | 287,029 | 3,157,319 |
| -1 | -11 | -31 | -47 | -197 | -341 | -517 | -1,457 | -2,167 | -6,107 | -9,259 | -16,027 | -67,177 | -101,849 | -287,029 | -3,157,319 |
Here are some more numbers to try:
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