A:
Positive:
1 x 230002155 x 46000437 x 328574535 x 657149257 x 894951285 x 178991799 x 127852557 x 8995
Negative:
-1 x -23000215-5 x -4600043-7 x -3285745-35 x -657149-257 x -89495-1285 x -17899-1799 x -12785-2557 x -8995
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 23,000,215, 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 | 23,000,215 | |
| -1 | -23,000,215 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 23,000,215.
Example:
1 x 23,000,215 = 23,000,215
and
-1 x -23,000,215 = 23,000,215
Notice both answers equal 23,000,215
With that explanation out of the way, let's continue. Next, we take the number 23,000,215 and divide it by 2:
23,000,215 ÷ 2 = 11,500,107.5
If the quotient is a whole number, then 2 and 11,500,107.5 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 | 23,000,215 | |
| -1 | -23,000,215 |
Now, we try dividing 23,000,215 by 3:
23,000,215 ÷ 3 = 7,666,738.3333
If the quotient is a whole number, then 3 and 7,666,738.3333 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 | 23,000,215 | |
| -1 | -23,000,215 |
Let's try dividing by 4:
23,000,215 ÷ 4 = 5,750,053.75
If the quotient is a whole number, then 4 and 5,750,053.75 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 | 23,000,215 | |
| -1 | 23,000,215 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 257 | 1,285 | 1,799 | 2,557 | 8,995 | 12,785 | 17,899 | 89,495 | 657,149 | 3,285,745 | 4,600,043 | 23,000,215 |
| -1 | -5 | -7 | -35 | -257 | -1,285 | -1,799 | -2,557 | -8,995 | -12,785 | -17,899 | -89,495 | -657,149 | -3,285,745 | -4,600,043 | -23,000,215 |
Here are some more numbers to try:
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