A:
Positive:
1 x 1001551555 x 2003103159 x 1697545295 x 339509467 x 214465727 x 1377652335 x 428933635 x 27553
Negative:
-1 x -100155155-5 x -20031031-59 x -1697545-295 x -339509-467 x -214465-727 x -137765-2335 x -42893-3635 x -27553
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 100,155,155, 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 | 100,155,155 | |
| -1 | -100,155,155 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 100,155,155.
Example:
1 x 100,155,155 = 100,155,155
and
-1 x -100,155,155 = 100,155,155
Notice both answers equal 100,155,155
With that explanation out of the way, let's continue. Next, we take the number 100,155,155 and divide it by 2:
100,155,155 ÷ 2 = 50,077,577.5
If the quotient is a whole number, then 2 and 50,077,577.5 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 | 100,155,155 | |
| -1 | -100,155,155 |
Now, we try dividing 100,155,155 by 3:
100,155,155 ÷ 3 = 33,385,051.6667
If the quotient is a whole number, then 3 and 33,385,051.6667 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 | 100,155,155 | |
| -1 | -100,155,155 |
Let's try dividing by 4:
100,155,155 ÷ 4 = 25,038,788.75
If the quotient is a whole number, then 4 and 25,038,788.75 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 | 100,155,155 | |
| -1 | 100,155,155 |
If you did it right, you will end up with this table:
| 1 | 5 | 59 | 295 | 467 | 727 | 2,335 | 3,635 | 27,553 | 42,893 | 137,765 | 214,465 | 339,509 | 1,697,545 | 20,031,031 | 100,155,155 |
| -1 | -5 | -59 | -295 | -467 | -727 | -2,335 | -3,635 | -27,553 | -42,893 | -137,765 | -214,465 | -339,509 | -1,697,545 | -20,031,031 | -100,155,155 |
Here are some more numbers to try:
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