A:
Positive:
1 x 1970423955 x 3940847911 x 1791294555 x 358258971 x 2775245355 x 555049781 x 2522953905 x 50459
Negative:
-1 x -197042395-5 x -39408479-11 x -17912945-55 x -3582589-71 x -2775245-355 x -555049-781 x -252295-3905 x -50459
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 197,042,395, 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 | 197,042,395 | |
| -1 | -197,042,395 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 197,042,395.
Example:
1 x 197,042,395 = 197,042,395
and
-1 x -197,042,395 = 197,042,395
Notice both answers equal 197,042,395
With that explanation out of the way, let's continue. Next, we take the number 197,042,395 and divide it by 2:
197,042,395 ÷ 2 = 98,521,197.5
If the quotient is a whole number, then 2 and 98,521,197.5 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 | 197,042,395 | |
| -1 | -197,042,395 |
Now, we try dividing 197,042,395 by 3:
197,042,395 ÷ 3 = 65,680,798.3333
If the quotient is a whole number, then 3 and 65,680,798.3333 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 | 197,042,395 | |
| -1 | -197,042,395 |
Let's try dividing by 4:
197,042,395 ÷ 4 = 49,260,598.75
If the quotient is a whole number, then 4 and 49,260,598.75 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 | 197,042,395 | |
| -1 | 197,042,395 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 71 | 355 | 781 | 3,905 | 50,459 | 252,295 | 555,049 | 2,775,245 | 3,582,589 | 17,912,945 | 39,408,479 | 197,042,395 |
| -1 | -5 | -11 | -55 | -71 | -355 | -781 | -3,905 | -50,459 | -252,295 | -555,049 | -2,775,245 | -3,582,589 | -17,912,945 | -39,408,479 | -197,042,395 |
Here are some more numbers to try:
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