A:
Positive:
1 x 1088609055 x 2177218161 x 1784605241 x 451705305 x 3569211205 x 903411481 x 735057405 x 14701
Negative:
-1 x -108860905-5 x -21772181-61 x -1784605-241 x -451705-305 x -356921-1205 x -90341-1481 x -73505-7405 x -14701
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 108,860,905, 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 | 108,860,905 | |
| -1 | -108,860,905 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 108,860,905.
Example:
1 x 108,860,905 = 108,860,905
and
-1 x -108,860,905 = 108,860,905
Notice both answers equal 108,860,905
With that explanation out of the way, let's continue. Next, we take the number 108,860,905 and divide it by 2:
108,860,905 ÷ 2 = 54,430,452.5
If the quotient is a whole number, then 2 and 54,430,452.5 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 | 108,860,905 | |
| -1 | -108,860,905 |
Now, we try dividing 108,860,905 by 3:
108,860,905 ÷ 3 = 36,286,968.3333
If the quotient is a whole number, then 3 and 36,286,968.3333 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 | 108,860,905 | |
| -1 | -108,860,905 |
Let's try dividing by 4:
108,860,905 ÷ 4 = 27,215,226.25
If the quotient is a whole number, then 4 and 27,215,226.25 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 | 108,860,905 | |
| -1 | 108,860,905 |
If you did it right, you will end up with this table:
| 1 | 5 | 61 | 241 | 305 | 1,205 | 1,481 | 7,405 | 14,701 | 73,505 | 90,341 | 356,921 | 451,705 | 1,784,605 | 21,772,181 | 108,860,905 |
| -1 | -5 | -61 | -241 | -305 | -1,205 | -1,481 | -7,405 | -14,701 | -73,505 | -90,341 | -356,921 | -451,705 | -1,784,605 | -21,772,181 | -108,860,905 |
Here are some more numbers to try:
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