A:
Positive:
1 x 1090076655 x 2180153313 x 838520529 x 375888565 x 1677041145 x 751777377 x 2891451885 x 57829
Negative:
-1 x -109007665-5 x -21801533-13 x -8385205-29 x -3758885-65 x -1677041-145 x -751777-377 x -289145-1885 x -57829
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 109,007,665, 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 | 109,007,665 | |
| -1 | -109,007,665 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 109,007,665.
Example:
1 x 109,007,665 = 109,007,665
and
-1 x -109,007,665 = 109,007,665
Notice both answers equal 109,007,665
With that explanation out of the way, let's continue. Next, we take the number 109,007,665 and divide it by 2:
109,007,665 ÷ 2 = 54,503,832.5
If the quotient is a whole number, then 2 and 54,503,832.5 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 | 109,007,665 | |
| -1 | -109,007,665 |
Now, we try dividing 109,007,665 by 3:
109,007,665 ÷ 3 = 36,335,888.3333
If the quotient is a whole number, then 3 and 36,335,888.3333 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 | 109,007,665 | |
| -1 | -109,007,665 |
Let's try dividing by 4:
109,007,665 ÷ 4 = 27,251,916.25
If the quotient is a whole number, then 4 and 27,251,916.25 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 | 109,007,665 | |
| -1 | 109,007,665 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 29 | 65 | 145 | 377 | 1,885 | 57,829 | 289,145 | 751,777 | 1,677,041 | 3,758,885 | 8,385,205 | 21,801,533 | 109,007,665 |
| -1 | -5 | -13 | -29 | -65 | -145 | -377 | -1,885 | -57,829 | -289,145 | -751,777 | -1,677,041 | -3,758,885 | -8,385,205 | -21,801,533 | -109,007,665 |
Here are some more numbers to try:
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