A:
Positive:
1 x 1679781555 x 3359563189 x 1887395211 x 796105445 x 3774791055 x 1592211789 x 938958945 x 18779
Negative:
-1 x -167978155-5 x -33595631-89 x -1887395-211 x -796105-445 x -377479-1055 x -159221-1789 x -93895-8945 x -18779
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 167,978,155, 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 | 167,978,155 | |
| -1 | -167,978,155 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 167,978,155.
Example:
1 x 167,978,155 = 167,978,155
and
-1 x -167,978,155 = 167,978,155
Notice both answers equal 167,978,155
With that explanation out of the way, let's continue. Next, we take the number 167,978,155 and divide it by 2:
167,978,155 ÷ 2 = 83,989,077.5
If the quotient is a whole number, then 2 and 83,989,077.5 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 | 167,978,155 | |
| -1 | -167,978,155 |
Now, we try dividing 167,978,155 by 3:
167,978,155 ÷ 3 = 55,992,718.3333
If the quotient is a whole number, then 3 and 55,992,718.3333 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 | 167,978,155 | |
| -1 | -167,978,155 |
Let's try dividing by 4:
167,978,155 ÷ 4 = 41,994,538.75
If the quotient is a whole number, then 4 and 41,994,538.75 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 | 167,978,155 | |
| -1 | 167,978,155 |
If you did it right, you will end up with this table:
| 1 | 5 | 89 | 211 | 445 | 1,055 | 1,789 | 8,945 | 18,779 | 93,895 | 159,221 | 377,479 | 796,105 | 1,887,395 | 33,595,631 | 167,978,155 |
| -1 | -5 | -89 | -211 | -445 | -1,055 | -1,789 | -8,945 | -18,779 | -93,895 | -159,221 | -377,479 | -796,105 | -1,887,395 | -33,595,631 | -167,978,155 |
Here are some more numbers to try:
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