A:
Positive:
1 x 1239780113 x 95367747 x 263783103 x 120367197 x 62933611 x 202911339 x 92592561 x 4841
Negative:
-1 x -12397801-13 x -953677-47 x -263783-103 x -120367-197 x -62933-611 x -20291-1339 x -9259-2561 x -4841
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 12,397,801, 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 | 12,397,801 | |
| -1 | -12,397,801 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,397,801.
Example:
1 x 12,397,801 = 12,397,801
and
-1 x -12,397,801 = 12,397,801
Notice both answers equal 12,397,801
With that explanation out of the way, let's continue. Next, we take the number 12,397,801 and divide it by 2:
12,397,801 ÷ 2 = 6,198,900.5
If the quotient is a whole number, then 2 and 6,198,900.5 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 | 12,397,801 | |
| -1 | -12,397,801 |
Now, we try dividing 12,397,801 by 3:
12,397,801 ÷ 3 = 4,132,600.3333
If the quotient is a whole number, then 3 and 4,132,600.3333 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 | 12,397,801 | |
| -1 | -12,397,801 |
Let's try dividing by 4:
12,397,801 ÷ 4 = 3,099,450.25
If the quotient is a whole number, then 4 and 3,099,450.25 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 | 12,397,801 | |
| -1 | 12,397,801 |
If you did it right, you will end up with this table:
| 1 | 13 | 47 | 103 | 197 | 611 | 1,339 | 2,561 | 4,841 | 9,259 | 20,291 | 62,933 | 120,367 | 263,783 | 953,677 | 12,397,801 |
| -1 | -13 | -47 | -103 | -197 | -611 | -1,339 | -2,561 | -4,841 | -9,259 | -20,291 | -62,933 | -120,367 | -263,783 | -953,677 | -12,397,801 |
Here are some more numbers to try:
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