A:
Positive:
1 x 2611723255 x 5223446525 x 1044689343 x 6073775127 x 2056475215 x 1214755635 x 4112951075 x 2429511913 x 1365253175 x 822595461 x 478259565 x 27305
Negative:
-1 x -261172325-5 x -52234465-25 x -10446893-43 x -6073775-127 x -2056475-215 x -1214755-635 x -411295-1075 x -242951-1913 x -136525-3175 x -82259-5461 x -47825-9565 x -27305
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 261,172,325, 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 | 261,172,325 | |
| -1 | -261,172,325 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 261,172,325.
Example:
1 x 261,172,325 = 261,172,325
and
-1 x -261,172,325 = 261,172,325
Notice both answers equal 261,172,325
With that explanation out of the way, let's continue. Next, we take the number 261,172,325 and divide it by 2:
261,172,325 ÷ 2 = 130,586,162.5
If the quotient is a whole number, then 2 and 130,586,162.5 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 | 261,172,325 | |
| -1 | -261,172,325 |
Now, we try dividing 261,172,325 by 3:
261,172,325 ÷ 3 = 87,057,441.6667
If the quotient is a whole number, then 3 and 87,057,441.6667 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 | 261,172,325 | |
| -1 | -261,172,325 |
Let's try dividing by 4:
261,172,325 ÷ 4 = 65,293,081.25
If the quotient is a whole number, then 4 and 65,293,081.25 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 | 261,172,325 | |
| -1 | 261,172,325 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 43 | 127 | 215 | 635 | 1,075 | 1,913 | 3,175 | 5,461 | 9,565 | 27,305 | 47,825 | 82,259 | 136,525 | 242,951 | 411,295 | 1,214,755 | 2,056,475 | 6,073,775 | 10,446,893 | 52,234,465 | 261,172,325 |
| -1 | -5 | -25 | -43 | -127 | -215 | -635 | -1,075 | -1,913 | -3,175 | -5,461 | -9,565 | -27,305 | -47,825 | -82,259 | -136,525 | -242,951 | -411,295 | -1,214,755 | -2,056,475 | -6,073,775 | -10,446,893 | -52,234,465 | -261,172,325 |
Here are some more numbers to try:
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