A:
Positive:
1 x 6508173111 x 591652113 x 5006287143 x 455117169 x 3850991859 x 350092197 x 296232693 x 24167
Negative:
-1 x -65081731-11 x -5916521-13 x -5006287-143 x -455117-169 x -385099-1859 x -35009-2197 x -29623-2693 x -24167
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 65,081,731, 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 | 65,081,731 | |
| -1 | -65,081,731 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 65,081,731.
Example:
1 x 65,081,731 = 65,081,731
and
-1 x -65,081,731 = 65,081,731
Notice both answers equal 65,081,731
With that explanation out of the way, let's continue. Next, we take the number 65,081,731 and divide it by 2:
65,081,731 ÷ 2 = 32,540,865.5
If the quotient is a whole number, then 2 and 32,540,865.5 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 | 65,081,731 | |
| -1 | -65,081,731 |
Now, we try dividing 65,081,731 by 3:
65,081,731 ÷ 3 = 21,693,910.3333
If the quotient is a whole number, then 3 and 21,693,910.3333 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 | 65,081,731 | |
| -1 | -65,081,731 |
Let's try dividing by 4:
65,081,731 ÷ 4 = 16,270,432.75
If the quotient is a whole number, then 4 and 16,270,432.75 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 | 65,081,731 | |
| -1 | 65,081,731 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 143 | 169 | 1,859 | 2,197 | 2,693 | 24,167 | 29,623 | 35,009 | 385,099 | 455,117 | 5,006,287 | 5,916,521 | 65,081,731 |
| -1 | -11 | -13 | -143 | -169 | -1,859 | -2,197 | -2,693 | -24,167 | -29,623 | -35,009 | -385,099 | -455,117 | -5,006,287 | -5,916,521 | -65,081,731 |
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