A:
Positive:
1 x 1554155355 x 3108310711 x 1412868519 x 817976555 x 282573795 x 1635953209 x 7436151045 x 148723
Negative:
-1 x -155415535-5 x -31083107-11 x -14128685-19 x -8179765-55 x -2825737-95 x -1635953-209 x -743615-1045 x -148723
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 155,415,535, 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 | 155,415,535 | |
| -1 | -155,415,535 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 155,415,535.
Example:
1 x 155,415,535 = 155,415,535
and
-1 x -155,415,535 = 155,415,535
Notice both answers equal 155,415,535
With that explanation out of the way, let's continue. Next, we take the number 155,415,535 and divide it by 2:
155,415,535 ÷ 2 = 77,707,767.5
If the quotient is a whole number, then 2 and 77,707,767.5 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 | 155,415,535 | |
| -1 | -155,415,535 |
Now, we try dividing 155,415,535 by 3:
155,415,535 ÷ 3 = 51,805,178.3333
If the quotient is a whole number, then 3 and 51,805,178.3333 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 | 155,415,535 | |
| -1 | -155,415,535 |
Let's try dividing by 4:
155,415,535 ÷ 4 = 38,853,883.75
If the quotient is a whole number, then 4 and 38,853,883.75 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 | 155,415,535 | |
| -1 | 155,415,535 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 19 | 55 | 95 | 209 | 1,045 | 148,723 | 743,615 | 1,635,953 | 2,825,737 | 8,179,765 | 14,128,685 | 31,083,107 | 155,415,535 |
| -1 | -5 | -11 | -19 | -55 | -95 | -209 | -1,045 | -148,723 | -743,615 | -1,635,953 | -2,825,737 | -8,179,765 | -14,128,685 | -31,083,107 | -155,415,535 |
Here are some more numbers to try:
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