A:
Positive:
1 x 1545511317 x 2207873317 x 9091243119 x 1298749241 x 641291289 x 534779317 x 4875431687 x 916132023 x 763972219 x 696494097 x 377235389 x 28679
Negative:
-1 x -154551131-7 x -22078733-17 x -9091243-119 x -1298749-241 x -641291-289 x -534779-317 x -487543-1687 x -91613-2023 x -76397-2219 x -69649-4097 x -37723-5389 x -28679
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 154,551,131, 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 | 154,551,131 | |
| -1 | -154,551,131 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 154,551,131.
Example:
1 x 154,551,131 = 154,551,131
and
-1 x -154,551,131 = 154,551,131
Notice both answers equal 154,551,131
With that explanation out of the way, let's continue. Next, we take the number 154,551,131 and divide it by 2:
154,551,131 ÷ 2 = 77,275,565.5
If the quotient is a whole number, then 2 and 77,275,565.5 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 | 154,551,131 | |
| -1 | -154,551,131 |
Now, we try dividing 154,551,131 by 3:
154,551,131 ÷ 3 = 51,517,043.6667
If the quotient is a whole number, then 3 and 51,517,043.6667 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 | 154,551,131 | |
| -1 | -154,551,131 |
Let's try dividing by 4:
154,551,131 ÷ 4 = 38,637,782.75
If the quotient is a whole number, then 4 and 38,637,782.75 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 | 154,551,131 | |
| -1 | 154,551,131 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 119 | 241 | 289 | 317 | 1,687 | 2,023 | 2,219 | 4,097 | 5,389 | 28,679 | 37,723 | 69,649 | 76,397 | 91,613 | 487,543 | 534,779 | 641,291 | 1,298,749 | 9,091,243 | 22,078,733 | 154,551,131 |
| -1 | -7 | -17 | -119 | -241 | -289 | -317 | -1,687 | -2,023 | -2,219 | -4,097 | -5,389 | -28,679 | -37,723 | -69,649 | -76,397 | -91,613 | -487,543 | -534,779 | -641,291 | -1,298,749 | -9,091,243 | -22,078,733 | -154,551,131 |
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