A:
Positive:
1 x 130421277 x 186316123 x 56704959 x 221053161 x 81007413 x 315791357 x 96111373 x 9499
Negative:
-1 x -13042127-7 x -1863161-23 x -567049-59 x -221053-161 x -81007-413 x -31579-1357 x -9611-1373 x -9499
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 13,042,127, 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 | 13,042,127 | |
| -1 | -13,042,127 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,042,127.
Example:
1 x 13,042,127 = 13,042,127
and
-1 x -13,042,127 = 13,042,127
Notice both answers equal 13,042,127
With that explanation out of the way, let's continue. Next, we take the number 13,042,127 and divide it by 2:
13,042,127 ÷ 2 = 6,521,063.5
If the quotient is a whole number, then 2 and 6,521,063.5 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 | 13,042,127 | |
| -1 | -13,042,127 |
Now, we try dividing 13,042,127 by 3:
13,042,127 ÷ 3 = 4,347,375.6667
If the quotient is a whole number, then 3 and 4,347,375.6667 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 | 13,042,127 | |
| -1 | -13,042,127 |
Let's try dividing by 4:
13,042,127 ÷ 4 = 3,260,531.75
If the quotient is a whole number, then 4 and 3,260,531.75 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 | 13,042,127 | |
| -1 | 13,042,127 |
If you did it right, you will end up with this table:
| 1 | 7 | 23 | 59 | 161 | 413 | 1,357 | 1,373 | 9,499 | 9,611 | 31,579 | 81,007 | 221,053 | 567,049 | 1,863,161 | 13,042,127 |
| -1 | -7 | -23 | -59 | -161 | -413 | -1,357 | -1,373 | -9,499 | -9,611 | -31,579 | -81,007 | -221,053 | -567,049 | -1,863,161 | -13,042,127 |
Here are some more numbers to try:
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