A:
Positive:
1 x 131401277 x 187716111 x 119455713 x 101077977 x 17065191 x 144397143 x 918891001 x 13127
Negative:
-1 x -13140127-7 x -1877161-11 x -1194557-13 x -1010779-77 x -170651-91 x -144397-143 x -91889-1001 x -13127
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 13,140,127, 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 | 13,140,127 | |
| -1 | -13,140,127 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,140,127.
Example:
1 x 13,140,127 = 13,140,127
and
-1 x -13,140,127 = 13,140,127
Notice both answers equal 13,140,127
With that explanation out of the way, let's continue. Next, we take the number 13,140,127 and divide it by 2:
13,140,127 ÷ 2 = 6,570,063.5
If the quotient is a whole number, then 2 and 6,570,063.5 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 | 13,140,127 | |
| -1 | -13,140,127 |
Now, we try dividing 13,140,127 by 3:
13,140,127 ÷ 3 = 4,380,042.3333
If the quotient is a whole number, then 3 and 4,380,042.3333 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 | 13,140,127 | |
| -1 | -13,140,127 |
Let's try dividing by 4:
13,140,127 ÷ 4 = 3,285,031.75
If the quotient is a whole number, then 4 and 3,285,031.75 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 | 13,140,127 | |
| -1 | 13,140,127 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 13 | 77 | 91 | 143 | 1,001 | 13,127 | 91,889 | 144,397 | 170,651 | 1,010,779 | 1,194,557 | 1,877,161 | 13,140,127 |
| -1 | -7 | -11 | -13 | -77 | -91 | -143 | -1,001 | -13,127 | -91,889 | -144,397 | -170,651 | -1,010,779 | -1,194,557 | -1,877,161 | -13,140,127 |
Here are some more numbers to try:
Try the factor calculator