A:
Positive:
1 x 262420137 x 374885929 x 904897203 x 129271257 x 102109503 x 521711799 x 145873521 x 7453
Negative:
-1 x -26242013-7 x -3748859-29 x -904897-203 x -129271-257 x -102109-503 x -52171-1799 x -14587-3521 x -7453
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 26,242,013, 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 | 26,242,013 | |
| -1 | -26,242,013 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 26,242,013.
Example:
1 x 26,242,013 = 26,242,013
and
-1 x -26,242,013 = 26,242,013
Notice both answers equal 26,242,013
With that explanation out of the way, let's continue. Next, we take the number 26,242,013 and divide it by 2:
26,242,013 ÷ 2 = 13,121,006.5
If the quotient is a whole number, then 2 and 13,121,006.5 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 | 26,242,013 | |
| -1 | -26,242,013 |
Now, we try dividing 26,242,013 by 3:
26,242,013 ÷ 3 = 8,747,337.6667
If the quotient is a whole number, then 3 and 8,747,337.6667 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 | 26,242,013 | |
| -1 | -26,242,013 |
Let's try dividing by 4:
26,242,013 ÷ 4 = 6,560,503.25
If the quotient is a whole number, then 4 and 6,560,503.25 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 | 26,242,013 | |
| -1 | 26,242,013 |
If you did it right, you will end up with this table:
| 1 | 7 | 29 | 203 | 257 | 503 | 1,799 | 3,521 | 7,453 | 14,587 | 52,171 | 102,109 | 129,271 | 904,897 | 3,748,859 | 26,242,013 |
| -1 | -7 | -29 | -203 | -257 | -503 | -1,799 | -3,521 | -7,453 | -14,587 | -52,171 | -102,109 | -129,271 | -904,897 | -3,748,859 | -26,242,013 |
Here are some more numbers to try:
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