A:
Positive:
1 x 1557964555 x 3115929137 x 4210715185 x 842143443 x 3516851901 x 819552215 x 703379505 x 16391
Negative:
-1 x -155796455-5 x -31159291-37 x -4210715-185 x -842143-443 x -351685-1901 x -81955-2215 x -70337-9505 x -16391
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 155,796,455, 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 | 155,796,455 | |
| -1 | -155,796,455 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 155,796,455.
Example:
1 x 155,796,455 = 155,796,455
and
-1 x -155,796,455 = 155,796,455
Notice both answers equal 155,796,455
With that explanation out of the way, let's continue. Next, we take the number 155,796,455 and divide it by 2:
155,796,455 ÷ 2 = 77,898,227.5
If the quotient is a whole number, then 2 and 77,898,227.5 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 | 155,796,455 | |
| -1 | -155,796,455 |
Now, we try dividing 155,796,455 by 3:
155,796,455 ÷ 3 = 51,932,151.6667
If the quotient is a whole number, then 3 and 51,932,151.6667 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 | 155,796,455 | |
| -1 | -155,796,455 |
Let's try dividing by 4:
155,796,455 ÷ 4 = 38,949,113.75
If the quotient is a whole number, then 4 and 38,949,113.75 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 | 155,796,455 | |
| -1 | 155,796,455 |
If you did it right, you will end up with this table:
| 1 | 5 | 37 | 185 | 443 | 1,901 | 2,215 | 9,505 | 16,391 | 70,337 | 81,955 | 351,685 | 842,143 | 4,210,715 | 31,159,291 | 155,796,455 |
| -1 | -5 | -37 | -185 | -443 | -1,901 | -2,215 | -9,505 | -16,391 | -70,337 | -81,955 | -351,685 | -842,143 | -4,210,715 | -31,159,291 | -155,796,455 |
Here are some more numbers to try:
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