A:
Positive:
1 x 204351555 x 408703113 x 157193523 x 88848565 x 314387115 x 177697299 x 683451495 x 13669
Negative:
-1 x -20435155-5 x -4087031-13 x -1571935-23 x -888485-65 x -314387-115 x -177697-299 x -68345-1495 x -13669
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 20,435,155, 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 | 20,435,155 | |
| -1 | -20,435,155 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,435,155.
Example:
1 x 20,435,155 = 20,435,155
and
-1 x -20,435,155 = 20,435,155
Notice both answers equal 20,435,155
With that explanation out of the way, let's continue. Next, we take the number 20,435,155 and divide it by 2:
20,435,155 ÷ 2 = 10,217,577.5
If the quotient is a whole number, then 2 and 10,217,577.5 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 | 20,435,155 | |
| -1 | -20,435,155 |
Now, we try dividing 20,435,155 by 3:
20,435,155 ÷ 3 = 6,811,718.3333
If the quotient is a whole number, then 3 and 6,811,718.3333 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 | 20,435,155 | |
| -1 | -20,435,155 |
Let's try dividing by 4:
20,435,155 ÷ 4 = 5,108,788.75
If the quotient is a whole number, then 4 and 5,108,788.75 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 | 20,435,155 | |
| -1 | 20,435,155 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 23 | 65 | 115 | 299 | 1,495 | 13,669 | 68,345 | 177,697 | 314,387 | 888,485 | 1,571,935 | 4,087,031 | 20,435,155 |
| -1 | -5 | -13 | -23 | -65 | -115 | -299 | -1,495 | -13,669 | -68,345 | -177,697 | -314,387 | -888,485 | -1,571,935 | -4,087,031 | -20,435,155 |
Here are some more numbers to try:
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