A:
Positive:
1 x 1553001855 x 3106003717 x 913530585 x 1827061263 x 5904951315 x 1180994471 x 347356947 x 22355
Negative:
-1 x -155300185-5 x -31060037-17 x -9135305-85 x -1827061-263 x -590495-1315 x -118099-4471 x -34735-6947 x -22355
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 155,300,185, 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 | 155,300,185 | |
| -1 | -155,300,185 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 155,300,185.
Example:
1 x 155,300,185 = 155,300,185
and
-1 x -155,300,185 = 155,300,185
Notice both answers equal 155,300,185
With that explanation out of the way, let's continue. Next, we take the number 155,300,185 and divide it by 2:
155,300,185 ÷ 2 = 77,650,092.5
If the quotient is a whole number, then 2 and 77,650,092.5 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 | 155,300,185 | |
| -1 | -155,300,185 |
Now, we try dividing 155,300,185 by 3:
155,300,185 ÷ 3 = 51,766,728.3333
If the quotient is a whole number, then 3 and 51,766,728.3333 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 | 155,300,185 | |
| -1 | -155,300,185 |
Let's try dividing by 4:
155,300,185 ÷ 4 = 38,825,046.25
If the quotient is a whole number, then 4 and 38,825,046.25 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 | 155,300,185 | |
| -1 | 155,300,185 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 85 | 263 | 1,315 | 4,471 | 6,947 | 22,355 | 34,735 | 118,099 | 590,495 | 1,827,061 | 9,135,305 | 31,060,037 | 155,300,185 |
| -1 | -5 | -17 | -85 | -263 | -1,315 | -4,471 | -6,947 | -22,355 | -34,735 | -118,099 | -590,495 | -1,827,061 | -9,135,305 | -31,060,037 | -155,300,185 |
Here are some more numbers to try:
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