A:
Positive:
1 x 1785119655 x 3570239329 x 6155585145 x 1231117463 x 3855552315 x 771112659 x 6713513295 x 13427
Negative:
-1 x -178511965-5 x -35702393-29 x -6155585-145 x -1231117-463 x -385555-2315 x -77111-2659 x -67135-13295 x -13427
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 178,511,965, 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 | 178,511,965 | |
| -1 | -178,511,965 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 178,511,965.
Example:
1 x 178,511,965 = 178,511,965
and
-1 x -178,511,965 = 178,511,965
Notice both answers equal 178,511,965
With that explanation out of the way, let's continue. Next, we take the number 178,511,965 and divide it by 2:
178,511,965 ÷ 2 = 89,255,982.5
If the quotient is a whole number, then 2 and 89,255,982.5 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 | 178,511,965 | |
| -1 | -178,511,965 |
Now, we try dividing 178,511,965 by 3:
178,511,965 ÷ 3 = 59,503,988.3333
If the quotient is a whole number, then 3 and 59,503,988.3333 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 | 178,511,965 | |
| -1 | -178,511,965 |
Let's try dividing by 4:
178,511,965 ÷ 4 = 44,627,991.25
If the quotient is a whole number, then 4 and 44,627,991.25 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 | 178,511,965 | |
| -1 | 178,511,965 |
If you did it right, you will end up with this table:
| 1 | 5 | 29 | 145 | 463 | 2,315 | 2,659 | 13,295 | 13,427 | 67,135 | 77,111 | 385,555 | 1,231,117 | 6,155,585 | 35,702,393 | 178,511,965 |
| -1 | -5 | -29 | -145 | -463 | -2,315 | -2,659 | -13,295 | -13,427 | -67,135 | -77,111 | -385,555 | -1,231,117 | -6,155,585 | -35,702,393 | -178,511,965 |
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