A:
Positive:
1 x 16555625911 x 1505056953 x 3123703199 x 831941583 x 2839731427 x 1160172189 x 7563110547 x 15697
Negative:
-1 x -165556259-11 x -15050569-53 x -3123703-199 x -831941-583 x -283973-1427 x -116017-2189 x -75631-10547 x -15697
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 165,556,259, 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 | 165,556,259 | |
| -1 | -165,556,259 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 165,556,259.
Example:
1 x 165,556,259 = 165,556,259
and
-1 x -165,556,259 = 165,556,259
Notice both answers equal 165,556,259
With that explanation out of the way, let's continue. Next, we take the number 165,556,259 and divide it by 2:
165,556,259 ÷ 2 = 82,778,129.5
If the quotient is a whole number, then 2 and 82,778,129.5 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 | 165,556,259 | |
| -1 | -165,556,259 |
Now, we try dividing 165,556,259 by 3:
165,556,259 ÷ 3 = 55,185,419.6667
If the quotient is a whole number, then 3 and 55,185,419.6667 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 | 165,556,259 | |
| -1 | -165,556,259 |
Let's try dividing by 4:
165,556,259 ÷ 4 = 41,389,064.75
If the quotient is a whole number, then 4 and 41,389,064.75 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 | 165,556,259 | |
| -1 | 165,556,259 |
If you did it right, you will end up with this table:
| 1 | 11 | 53 | 199 | 583 | 1,427 | 2,189 | 10,547 | 15,697 | 75,631 | 116,017 | 283,973 | 831,941 | 3,123,703 | 15,050,569 | 165,556,259 |
| -1 | -11 | -53 | -199 | -583 | -1,427 | -2,189 | -10,547 | -15,697 | -75,631 | -116,017 | -283,973 | -831,941 | -3,123,703 | -15,050,569 | -165,556,259 |
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