A:
Positive:
1 x 26081716111 x 2371065119 x 13727219199 x 1310639209 x 12479292189 x 1191493781 x 689816271 x 41591
Negative:
-1 x -260817161-11 x -23710651-19 x -13727219-199 x -1310639-209 x -1247929-2189 x -119149-3781 x -68981-6271 x -41591
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 260,817,161, 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 | 260,817,161 | |
| -1 | -260,817,161 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 260,817,161.
Example:
1 x 260,817,161 = 260,817,161
and
-1 x -260,817,161 = 260,817,161
Notice both answers equal 260,817,161
With that explanation out of the way, let's continue. Next, we take the number 260,817,161 and divide it by 2:
260,817,161 ÷ 2 = 130,408,580.5
If the quotient is a whole number, then 2 and 130,408,580.5 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 | 260,817,161 | |
| -1 | -260,817,161 |
Now, we try dividing 260,817,161 by 3:
260,817,161 ÷ 3 = 86,939,053.6667
If the quotient is a whole number, then 3 and 86,939,053.6667 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 | 260,817,161 | |
| -1 | -260,817,161 |
Let's try dividing by 4:
260,817,161 ÷ 4 = 65,204,290.25
If the quotient is a whole number, then 4 and 65,204,290.25 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 | 260,817,161 | |
| -1 | 260,817,161 |
If you did it right, you will end up with this table:
| 1 | 11 | 19 | 199 | 209 | 2,189 | 3,781 | 6,271 | 41,591 | 68,981 | 119,149 | 1,247,929 | 1,310,639 | 13,727,219 | 23,710,651 | 260,817,161 |
| -1 | -11 | -19 | -199 | -209 | -2,189 | -3,781 | -6,271 | -41,591 | -68,981 | -119,149 | -1,247,929 | -1,310,639 | -13,727,219 | -23,710,651 | -260,817,161 |
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