A:
Positive:
1 x 1655656317 x 2365223311 x 1505142147 x 352267377 x 2150203121 x 1368311329 x 503239517 x 320243847 x 1954733619 x 457494159 x 398095687 x 29113
Negative:
-1 x -165565631-7 x -23652233-11 x -15051421-47 x -3522673-77 x -2150203-121 x -1368311-329 x -503239-517 x -320243-847 x -195473-3619 x -45749-4159 x -39809-5687 x -29113
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 165,565,631, 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 | 165,565,631 | |
| -1 | -165,565,631 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 165,565,631.
Example:
1 x 165,565,631 = 165,565,631
and
-1 x -165,565,631 = 165,565,631
Notice both answers equal 165,565,631
With that explanation out of the way, let's continue. Next, we take the number 165,565,631 and divide it by 2:
165,565,631 ÷ 2 = 82,782,815.5
If the quotient is a whole number, then 2 and 82,782,815.5 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 | 165,565,631 | |
| -1 | -165,565,631 |
Now, we try dividing 165,565,631 by 3:
165,565,631 ÷ 3 = 55,188,543.6667
If the quotient is a whole number, then 3 and 55,188,543.6667 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 | 165,565,631 | |
| -1 | -165,565,631 |
Let's try dividing by 4:
165,565,631 ÷ 4 = 41,391,407.75
If the quotient is a whole number, then 4 and 41,391,407.75 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 | 165,565,631 | |
| -1 | 165,565,631 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 47 | 77 | 121 | 329 | 517 | 847 | 3,619 | 4,159 | 5,687 | 29,113 | 39,809 | 45,749 | 195,473 | 320,243 | 503,239 | 1,368,311 | 2,150,203 | 3,522,673 | 15,051,421 | 23,652,233 | 165,565,631 |
| -1 | -7 | -11 | -47 | -77 | -121 | -329 | -517 | -847 | -3,619 | -4,159 | -5,687 | -29,113 | -39,809 | -45,749 | -195,473 | -320,243 | -503,239 | -1,368,311 | -2,150,203 | -3,522,673 | -15,051,421 | -23,652,233 | -165,565,631 |
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