A:
Positive:
1 x 2132342311 x 193849317 x 1254319101 x 211123187 x 1140291111 x 191931129 x 188871717 x 12419
Negative:
-1 x -21323423-11 x -1938493-17 x -1254319-101 x -211123-187 x -114029-1111 x -19193-1129 x -18887-1717 x -12419
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 21,323,423, 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 | 21,323,423 | |
| -1 | -21,323,423 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 21,323,423.
Example:
1 x 21,323,423 = 21,323,423
and
-1 x -21,323,423 = 21,323,423
Notice both answers equal 21,323,423
With that explanation out of the way, let's continue. Next, we take the number 21,323,423 and divide it by 2:
21,323,423 ÷ 2 = 10,661,711.5
If the quotient is a whole number, then 2 and 10,661,711.5 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 | 21,323,423 | |
| -1 | -21,323,423 |
Now, we try dividing 21,323,423 by 3:
21,323,423 ÷ 3 = 7,107,807.6667
If the quotient is a whole number, then 3 and 7,107,807.6667 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 | 21,323,423 | |
| -1 | -21,323,423 |
Let's try dividing by 4:
21,323,423 ÷ 4 = 5,330,855.75
If the quotient is a whole number, then 4 and 5,330,855.75 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 | 21,323,423 | |
| -1 | 21,323,423 |
If you did it right, you will end up with this table:
| 1 | 11 | 17 | 101 | 187 | 1,111 | 1,129 | 1,717 | 12,419 | 18,887 | 19,193 | 114,029 | 211,123 | 1,254,319 | 1,938,493 | 21,323,423 |
| -1 | -11 | -17 | -101 | -187 | -1,111 | -1,129 | -1,717 | -12,419 | -18,887 | -19,193 | -114,029 | -211,123 | -1,254,319 | -1,938,493 | -21,323,423 |
Here are some more numbers to try:
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