A:
Positive:
1 x 1679098555 x 3358197129 x 578999573 x 2300135145 x 1157999365 x 460027547 x 306965841 x 1996552117 x 793152735 x 613934205 x 3993110585 x 15863
Negative:
-1 x -167909855-5 x -33581971-29 x -5789995-73 x -2300135-145 x -1157999-365 x -460027-547 x -306965-841 x -199655-2117 x -79315-2735 x -61393-4205 x -39931-10585 x -15863
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 167,909,855, 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 | 167,909,855 | |
| -1 | -167,909,855 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 167,909,855.
Example:
1 x 167,909,855 = 167,909,855
and
-1 x -167,909,855 = 167,909,855
Notice both answers equal 167,909,855
With that explanation out of the way, let's continue. Next, we take the number 167,909,855 and divide it by 2:
167,909,855 ÷ 2 = 83,954,927.5
If the quotient is a whole number, then 2 and 83,954,927.5 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 | 167,909,855 | |
| -1 | -167,909,855 |
Now, we try dividing 167,909,855 by 3:
167,909,855 ÷ 3 = 55,969,951.6667
If the quotient is a whole number, then 3 and 55,969,951.6667 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 | 167,909,855 | |
| -1 | -167,909,855 |
Let's try dividing by 4:
167,909,855 ÷ 4 = 41,977,463.75
If the quotient is a whole number, then 4 and 41,977,463.75 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 | 167,909,855 | |
| -1 | 167,909,855 |
If you did it right, you will end up with this table:
| 1 | 5 | 29 | 73 | 145 | 365 | 547 | 841 | 2,117 | 2,735 | 4,205 | 10,585 | 15,863 | 39,931 | 61,393 | 79,315 | 199,655 | 306,965 | 460,027 | 1,157,999 | 2,300,135 | 5,789,995 | 33,581,971 | 167,909,855 |
| -1 | -5 | -29 | -73 | -145 | -365 | -547 | -841 | -2,117 | -2,735 | -4,205 | -10,585 | -15,863 | -39,931 | -61,393 | -79,315 | -199,655 | -306,965 | -460,027 | -1,157,999 | -2,300,135 | -5,789,995 | -33,581,971 | -167,909,855 |
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