A:
Positive:
1 x 318008355 x 636016711 x 289098523 x 138264555 x 578197115 x 276529253 x 125695529 x 601151093 x 290951265 x 251392645 x 120235465 x 5819
Negative:
-1 x -31800835-5 x -6360167-11 x -2890985-23 x -1382645-55 x -578197-115 x -276529-253 x -125695-529 x -60115-1093 x -29095-1265 x -25139-2645 x -12023-5465 x -5819
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 31,800,835, 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 | 31,800,835 | |
| -1 | -31,800,835 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 31,800,835.
Example:
1 x 31,800,835 = 31,800,835
and
-1 x -31,800,835 = 31,800,835
Notice both answers equal 31,800,835
With that explanation out of the way, let's continue. Next, we take the number 31,800,835 and divide it by 2:
31,800,835 ÷ 2 = 15,900,417.5
If the quotient is a whole number, then 2 and 15,900,417.5 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 | 31,800,835 | |
| -1 | -31,800,835 |
Now, we try dividing 31,800,835 by 3:
31,800,835 ÷ 3 = 10,600,278.3333
If the quotient is a whole number, then 3 and 10,600,278.3333 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 | 31,800,835 | |
| -1 | -31,800,835 |
Let's try dividing by 4:
31,800,835 ÷ 4 = 7,950,208.75
If the quotient is a whole number, then 4 and 7,950,208.75 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 | 31,800,835 | |
| -1 | 31,800,835 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 23 | 55 | 115 | 253 | 529 | 1,093 | 1,265 | 2,645 | 5,465 | 5,819 | 12,023 | 25,139 | 29,095 | 60,115 | 125,695 | 276,529 | 578,197 | 1,382,645 | 2,890,985 | 6,360,167 | 31,800,835 |
| -1 | -5 | -11 | -23 | -55 | -115 | -253 | -529 | -1,093 | -1,265 | -2,645 | -5,465 | -5,819 | -12,023 | -25,139 | -29,095 | -60,115 | -125,695 | -276,529 | -578,197 | -1,382,645 | -2,890,985 | -6,360,167 | -31,800,835 |
Here are some more numbers to try:
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