A:
Positive:
1 x 18716855311 x 1701532313 x 14397581143 x 1308871241 x 7766332651 x 706033133 x 597415431 x 34463
Negative:
-1 x -187168553-11 x -17015323-13 x -14397581-143 x -1308871-241 x -776633-2651 x -70603-3133 x -59741-5431 x -34463
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 187,168,553, 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 | 187,168,553 | |
| -1 | -187,168,553 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 187,168,553.
Example:
1 x 187,168,553 = 187,168,553
and
-1 x -187,168,553 = 187,168,553
Notice both answers equal 187,168,553
With that explanation out of the way, let's continue. Next, we take the number 187,168,553 and divide it by 2:
187,168,553 ÷ 2 = 93,584,276.5
If the quotient is a whole number, then 2 and 93,584,276.5 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 | 187,168,553 | |
| -1 | -187,168,553 |
Now, we try dividing 187,168,553 by 3:
187,168,553 ÷ 3 = 62,389,517.6667
If the quotient is a whole number, then 3 and 62,389,517.6667 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 | 187,168,553 | |
| -1 | -187,168,553 |
Let's try dividing by 4:
187,168,553 ÷ 4 = 46,792,138.25
If the quotient is a whole number, then 4 and 46,792,138.25 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 | 187,168,553 | |
| -1 | 187,168,553 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 143 | 241 | 2,651 | 3,133 | 5,431 | 34,463 | 59,741 | 70,603 | 776,633 | 1,308,871 | 14,397,581 | 17,015,323 | 187,168,553 |
| -1 | -11 | -13 | -143 | -241 | -2,651 | -3,133 | -5,431 | -34,463 | -59,741 | -70,603 | -776,633 | -1,308,871 | -14,397,581 | -17,015,323 | -187,168,553 |
Here are some more numbers to try:
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