A:
Positive:
1 x 1559061355 x 311812277 x 2227230511 x 1417328535 x 445446155 x 283465777 x 2024755385 x 404951
Negative:
-1 x -155906135-5 x -31181227-7 x -22272305-11 x -14173285-35 x -4454461-55 x -2834657-77 x -2024755-385 x -404951
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 155,906,135, 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 | 155,906,135 | |
| -1 | -155,906,135 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 155,906,135.
Example:
1 x 155,906,135 = 155,906,135
and
-1 x -155,906,135 = 155,906,135
Notice both answers equal 155,906,135
With that explanation out of the way, let's continue. Next, we take the number 155,906,135 and divide it by 2:
155,906,135 ÷ 2 = 77,953,067.5
If the quotient is a whole number, then 2 and 77,953,067.5 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 | 155,906,135 | |
| -1 | -155,906,135 |
Now, we try dividing 155,906,135 by 3:
155,906,135 ÷ 3 = 51,968,711.6667
If the quotient is a whole number, then 3 and 51,968,711.6667 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 | 155,906,135 | |
| -1 | -155,906,135 |
Let's try dividing by 4:
155,906,135 ÷ 4 = 38,976,533.75
If the quotient is a whole number, then 4 and 38,976,533.75 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 | 155,906,135 | |
| -1 | 155,906,135 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 11 | 35 | 55 | 77 | 385 | 404,951 | 2,024,755 | 2,834,657 | 4,454,461 | 14,173,285 | 22,272,305 | 31,181,227 | 155,906,135 |
| -1 | -5 | -7 | -11 | -35 | -55 | -77 | -385 | -404,951 | -2,024,755 | -2,834,657 | -4,454,461 | -14,173,285 | -22,272,305 | -31,181,227 | -155,906,135 |
Here are some more numbers to try:
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