A:
Positive:
1 x 1789917555 x 3579835137 x 4837615185 x 967523811 x 2207051193 x 1500354055 x 441415965 x 30007
Negative:
-1 x -178991755-5 x -35798351-37 x -4837615-185 x -967523-811 x -220705-1193 x -150035-4055 x -44141-5965 x -30007
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 178,991,755, 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 | 178,991,755 | |
| -1 | -178,991,755 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 178,991,755.
Example:
1 x 178,991,755 = 178,991,755
and
-1 x -178,991,755 = 178,991,755
Notice both answers equal 178,991,755
With that explanation out of the way, let's continue. Next, we take the number 178,991,755 and divide it by 2:
178,991,755 ÷ 2 = 89,495,877.5
If the quotient is a whole number, then 2 and 89,495,877.5 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 | 178,991,755 | |
| -1 | -178,991,755 |
Now, we try dividing 178,991,755 by 3:
178,991,755 ÷ 3 = 59,663,918.3333
If the quotient is a whole number, then 3 and 59,663,918.3333 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 | 178,991,755 | |
| -1 | -178,991,755 |
Let's try dividing by 4:
178,991,755 ÷ 4 = 44,747,938.75
If the quotient is a whole number, then 4 and 44,747,938.75 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 | 178,991,755 | |
| -1 | 178,991,755 |
If you did it right, you will end up with this table:
| 1 | 5 | 37 | 185 | 811 | 1,193 | 4,055 | 5,965 | 30,007 | 44,141 | 150,035 | 220,705 | 967,523 | 4,837,615 | 35,798,351 | 178,991,755 |
| -1 | -5 | -37 | -185 | -811 | -1,193 | -4,055 | -5,965 | -30,007 | -44,141 | -150,035 | -220,705 | -967,523 | -4,837,615 | -35,798,351 | -178,991,755 |
Here are some more numbers to try:
Try the factor calculator