A:
Positive:
1 x 213233355 x 426466711 x 193848555 x 387697229 x 931151145 x 186231693 x 125952519 x 8465
Negative:
-1 x -21323335-5 x -4264667-11 x -1938485-55 x -387697-229 x -93115-1145 x -18623-1693 x -12595-2519 x -8465
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 21,323,335, 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 | 21,323,335 | |
| -1 | -21,323,335 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 21,323,335.
Example:
1 x 21,323,335 = 21,323,335
and
-1 x -21,323,335 = 21,323,335
Notice both answers equal 21,323,335
With that explanation out of the way, let's continue. Next, we take the number 21,323,335 and divide it by 2:
21,323,335 ÷ 2 = 10,661,667.5
If the quotient is a whole number, then 2 and 10,661,667.5 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 | 21,323,335 | |
| -1 | -21,323,335 |
Now, we try dividing 21,323,335 by 3:
21,323,335 ÷ 3 = 7,107,778.3333
If the quotient is a whole number, then 3 and 7,107,778.3333 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 | 21,323,335 | |
| -1 | -21,323,335 |
Let's try dividing by 4:
21,323,335 ÷ 4 = 5,330,833.75
If the quotient is a whole number, then 4 and 5,330,833.75 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 | 21,323,335 | |
| -1 | 21,323,335 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 229 | 1,145 | 1,693 | 2,519 | 8,465 | 12,595 | 18,623 | 93,115 | 387,697 | 1,938,485 | 4,264,667 | 21,323,335 |
| -1 | -5 | -11 | -55 | -229 | -1,145 | -1,693 | -2,519 | -8,465 | -12,595 | -18,623 | -93,115 | -387,697 | -1,938,485 | -4,264,667 | -21,323,335 |
Here are some more numbers to try:
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