A:
Positive:
1 x 231887155 x 463774311 x 210806523 x 100820555 x 421613115 x 201641253 x 91655529 x 43835797 x 290951265 x 183312645 x 87673985 x 5819
Negative:
-1 x -23188715-5 x -4637743-11 x -2108065-23 x -1008205-55 x -421613-115 x -201641-253 x -91655-529 x -43835-797 x -29095-1265 x -18331-2645 x -8767-3985 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 23,188,715, 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 | 23,188,715 | |
| -1 | -23,188,715 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 23,188,715.
Example:
1 x 23,188,715 = 23,188,715
and
-1 x -23,188,715 = 23,188,715
Notice both answers equal 23,188,715
With that explanation out of the way, let's continue. Next, we take the number 23,188,715 and divide it by 2:
23,188,715 ÷ 2 = 11,594,357.5
If the quotient is a whole number, then 2 and 11,594,357.5 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 | 23,188,715 | |
| -1 | -23,188,715 |
Now, we try dividing 23,188,715 by 3:
23,188,715 ÷ 3 = 7,729,571.6667
If the quotient is a whole number, then 3 and 7,729,571.6667 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 | 23,188,715 | |
| -1 | -23,188,715 |
Let's try dividing by 4:
23,188,715 ÷ 4 = 5,797,178.75
If the quotient is a whole number, then 4 and 5,797,178.75 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 | 23,188,715 | |
| -1 | 23,188,715 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 23 | 55 | 115 | 253 | 529 | 797 | 1,265 | 2,645 | 3,985 | 5,819 | 8,767 | 18,331 | 29,095 | 43,835 | 91,655 | 201,641 | 421,613 | 1,008,205 | 2,108,065 | 4,637,743 | 23,188,715 |
| -1 | -5 | -11 | -23 | -55 | -115 | -253 | -529 | -797 | -1,265 | -2,645 | -3,985 | -5,819 | -8,767 | -18,331 | -29,095 | -43,835 | -91,655 | -201,641 | -421,613 | -1,008,205 | -2,108,065 | -4,637,743 | -23,188,715 |
Here are some more numbers to try:
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