A:
Positive:
1 x 428042155 x 856084317 x 251789585 x 503579433 x 988551163 x 368052165 x 197715815 x 7361
Negative:
-1 x -42804215-5 x -8560843-17 x -2517895-85 x -503579-433 x -98855-1163 x -36805-2165 x -19771-5815 x -7361
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 42,804,215, 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 | 42,804,215 | |
| -1 | -42,804,215 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 42,804,215.
Example:
1 x 42,804,215 = 42,804,215
and
-1 x -42,804,215 = 42,804,215
Notice both answers equal 42,804,215
With that explanation out of the way, let's continue. Next, we take the number 42,804,215 and divide it by 2:
42,804,215 ÷ 2 = 21,402,107.5
If the quotient is a whole number, then 2 and 21,402,107.5 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 | 42,804,215 | |
| -1 | -42,804,215 |
Now, we try dividing 42,804,215 by 3:
42,804,215 ÷ 3 = 14,268,071.6667
If the quotient is a whole number, then 3 and 14,268,071.6667 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 | 42,804,215 | |
| -1 | -42,804,215 |
Let's try dividing by 4:
42,804,215 ÷ 4 = 10,701,053.75
If the quotient is a whole number, then 4 and 10,701,053.75 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 | 42,804,215 | |
| -1 | 42,804,215 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 85 | 433 | 1,163 | 2,165 | 5,815 | 7,361 | 19,771 | 36,805 | 98,855 | 503,579 | 2,517,895 | 8,560,843 | 42,804,215 |
| -1 | -5 | -17 | -85 | -433 | -1,163 | -2,165 | -5,815 | -7,361 | -19,771 | -36,805 | -98,855 | -503,579 | -2,517,895 | -8,560,843 | -42,804,215 |
Here are some more numbers to try:
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