A:
Positive:
1 x 131128277 x 187326113 x 100867991 x 144097103 x 127309721 x 181871339 x 97931399 x 9373
Negative:
-1 x -13112827-7 x -1873261-13 x -1008679-91 x -144097-103 x -127309-721 x -18187-1339 x -9793-1399 x -9373
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 13,112,827, 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 | 13,112,827 | |
| -1 | -13,112,827 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,112,827.
Example:
1 x 13,112,827 = 13,112,827
and
-1 x -13,112,827 = 13,112,827
Notice both answers equal 13,112,827
With that explanation out of the way, let's continue. Next, we take the number 13,112,827 and divide it by 2:
13,112,827 ÷ 2 = 6,556,413.5
If the quotient is a whole number, then 2 and 6,556,413.5 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 | 13,112,827 | |
| -1 | -13,112,827 |
Now, we try dividing 13,112,827 by 3:
13,112,827 ÷ 3 = 4,370,942.3333
If the quotient is a whole number, then 3 and 4,370,942.3333 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 | 13,112,827 | |
| -1 | -13,112,827 |
Let's try dividing by 4:
13,112,827 ÷ 4 = 3,278,206.75
If the quotient is a whole number, then 4 and 3,278,206.75 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 | 13,112,827 | |
| -1 | 13,112,827 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 91 | 103 | 721 | 1,339 | 1,399 | 9,373 | 9,793 | 18,187 | 127,309 | 144,097 | 1,008,679 | 1,873,261 | 13,112,827 |
| -1 | -7 | -13 | -91 | -103 | -721 | -1,339 | -1,399 | -9,373 | -9,793 | -18,187 | -127,309 | -144,097 | -1,008,679 | -1,873,261 | -13,112,827 |
Here are some more numbers to try:
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