A:
Positive:
1 x 15598082319 x 820951743 x 362746171 x 2196913817 x 1909191349 x 1156272689 x 580073053 x 51091
Negative:
-1 x -155980823-19 x -8209517-43 x -3627461-71 x -2196913-817 x -190919-1349 x -115627-2689 x -58007-3053 x -51091
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 155,980,823, 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 | 155,980,823 | |
| -1 | -155,980,823 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 155,980,823.
Example:
1 x 155,980,823 = 155,980,823
and
-1 x -155,980,823 = 155,980,823
Notice both answers equal 155,980,823
With that explanation out of the way, let's continue. Next, we take the number 155,980,823 and divide it by 2:
155,980,823 ÷ 2 = 77,990,411.5
If the quotient is a whole number, then 2 and 77,990,411.5 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 | 155,980,823 | |
| -1 | -155,980,823 |
Now, we try dividing 155,980,823 by 3:
155,980,823 ÷ 3 = 51,993,607.6667
If the quotient is a whole number, then 3 and 51,993,607.6667 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 | 155,980,823 | |
| -1 | -155,980,823 |
Let's try dividing by 4:
155,980,823 ÷ 4 = 38,995,205.75
If the quotient is a whole number, then 4 and 38,995,205.75 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 | 155,980,823 | |
| -1 | 155,980,823 |
If you did it right, you will end up with this table:
| 1 | 19 | 43 | 71 | 817 | 1,349 | 2,689 | 3,053 | 51,091 | 58,007 | 115,627 | 190,919 | 2,196,913 | 3,627,461 | 8,209,517 | 155,980,823 |
| -1 | -19 | -43 | -71 | -817 | -1,349 | -2,689 | -3,053 | -51,091 | -58,007 | -115,627 | -190,919 | -2,196,913 | -3,627,461 | -8,209,517 | -155,980,823 |
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