A:
Positive:
1 x 1091408155 x 218281637 x 1559154535 x 311830947 x 2322145235 x 464429329 x 3317351645 x 66347
Negative:
-1 x -109140815-5 x -21828163-7 x -15591545-35 x -3118309-47 x -2322145-235 x -464429-329 x -331735-1645 x -66347
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 109,140,815, 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 | 109,140,815 | |
| -1 | -109,140,815 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 109,140,815.
Example:
1 x 109,140,815 = 109,140,815
and
-1 x -109,140,815 = 109,140,815
Notice both answers equal 109,140,815
With that explanation out of the way, let's continue. Next, we take the number 109,140,815 and divide it by 2:
109,140,815 ÷ 2 = 54,570,407.5
If the quotient is a whole number, then 2 and 54,570,407.5 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 | 109,140,815 | |
| -1 | -109,140,815 |
Now, we try dividing 109,140,815 by 3:
109,140,815 ÷ 3 = 36,380,271.6667
If the quotient is a whole number, then 3 and 36,380,271.6667 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 | 109,140,815 | |
| -1 | -109,140,815 |
Let's try dividing by 4:
109,140,815 ÷ 4 = 27,285,203.75
If the quotient is a whole number, then 4 and 27,285,203.75 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 | 109,140,815 | |
| -1 | 109,140,815 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 47 | 235 | 329 | 1,645 | 66,347 | 331,735 | 464,429 | 2,322,145 | 3,118,309 | 15,591,545 | 21,828,163 | 109,140,815 |
| -1 | -5 | -7 | -35 | -47 | -235 | -329 | -1,645 | -66,347 | -331,735 | -464,429 | -2,322,145 | -3,118,309 | -15,591,545 | -21,828,163 | -109,140,815 |
Here are some more numbers to try:
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