A:
Positive:
1 x 30713055 x 61426117 x 18066523 x 13353585 x 36133115 x 26707391 x 78551571 x 1955
Negative:
-1 x -3071305-5 x -614261-17 x -180665-23 x -133535-85 x -36133-115 x -26707-391 x -7855-1571 x -1955
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 3,071,305, 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 | 3,071,305 | |
| -1 | -3,071,305 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,071,305.
Example:
1 x 3,071,305 = 3,071,305
and
-1 x -3,071,305 = 3,071,305
Notice both answers equal 3,071,305
With that explanation out of the way, let's continue. Next, we take the number 3,071,305 and divide it by 2:
3,071,305 ÷ 2 = 1,535,652.5
If the quotient is a whole number, then 2 and 1,535,652.5 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 | 3,071,305 | |
| -1 | -3,071,305 |
Now, we try dividing 3,071,305 by 3:
3,071,305 ÷ 3 = 1,023,768.3333
If the quotient is a whole number, then 3 and 1,023,768.3333 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 | 3,071,305 | |
| -1 | -3,071,305 |
Let's try dividing by 4:
3,071,305 ÷ 4 = 767,826.25
If the quotient is a whole number, then 4 and 767,826.25 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 | 3,071,305 | |
| -1 | 3,071,305 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 23 | 85 | 115 | 391 | 1,571 | 1,955 | 7,855 | 26,707 | 36,133 | 133,535 | 180,665 | 614,261 | 3,071,305 |
| -1 | -5 | -17 | -23 | -85 | -115 | -391 | -1,571 | -1,955 | -7,855 | -26,707 | -36,133 | -133,535 | -180,665 | -614,261 | -3,071,305 |
Here are some more numbers to try:
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