A:
Positive:
1 x 399821755 x 799643519 x 210432525 x 159928741 x 97517595 x 420865205 x 195035475 x 84173779 x 513251025 x 390072053 x 194753895 x 10265
Negative:
-1 x -39982175-5 x -7996435-19 x -2104325-25 x -1599287-41 x -975175-95 x -420865-205 x -195035-475 x -84173-779 x -51325-1025 x -39007-2053 x -19475-3895 x -10265
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 39,982,175, 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 | 39,982,175 | |
| -1 | -39,982,175 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 39,982,175.
Example:
1 x 39,982,175 = 39,982,175
and
-1 x -39,982,175 = 39,982,175
Notice both answers equal 39,982,175
With that explanation out of the way, let's continue. Next, we take the number 39,982,175 and divide it by 2:
39,982,175 ÷ 2 = 19,991,087.5
If the quotient is a whole number, then 2 and 19,991,087.5 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 | 39,982,175 | |
| -1 | -39,982,175 |
Now, we try dividing 39,982,175 by 3:
39,982,175 ÷ 3 = 13,327,391.6667
If the quotient is a whole number, then 3 and 13,327,391.6667 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 | 39,982,175 | |
| -1 | -39,982,175 |
Let's try dividing by 4:
39,982,175 ÷ 4 = 9,995,543.75
If the quotient is a whole number, then 4 and 9,995,543.75 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 | 39,982,175 | |
| -1 | 39,982,175 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 25 | 41 | 95 | 205 | 475 | 779 | 1,025 | 2,053 | 3,895 | 10,265 | 19,475 | 39,007 | 51,325 | 84,173 | 195,035 | 420,865 | 975,175 | 1,599,287 | 2,104,325 | 7,996,435 | 39,982,175 |
| -1 | -5 | -19 | -25 | -41 | -95 | -205 | -475 | -779 | -1,025 | -2,053 | -3,895 | -10,265 | -19,475 | -39,007 | -51,325 | -84,173 | -195,035 | -420,865 | -975,175 | -1,599,287 | -2,104,325 | -7,996,435 | -39,982,175 |
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