A:
Positive:
1 x 214332255 x 428664511 x 194847525 x 85732955 x 38969559 x 363275275 x 77939295 x 72655649 x 330251321 x 162251475 x 145313245 x 6605
Negative:
-1 x -21433225-5 x -4286645-11 x -1948475-25 x -857329-55 x -389695-59 x -363275-275 x -77939-295 x -72655-649 x -33025-1321 x -16225-1475 x -14531-3245 x -6605
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 21,433,225, 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 | 21,433,225 | |
| -1 | -21,433,225 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 21,433,225.
Example:
1 x 21,433,225 = 21,433,225
and
-1 x -21,433,225 = 21,433,225
Notice both answers equal 21,433,225
With that explanation out of the way, let's continue. Next, we take the number 21,433,225 and divide it by 2:
21,433,225 ÷ 2 = 10,716,612.5
If the quotient is a whole number, then 2 and 10,716,612.5 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 | 21,433,225 | |
| -1 | -21,433,225 |
Now, we try dividing 21,433,225 by 3:
21,433,225 ÷ 3 = 7,144,408.3333
If the quotient is a whole number, then 3 and 7,144,408.3333 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 | 21,433,225 | |
| -1 | -21,433,225 |
Let's try dividing by 4:
21,433,225 ÷ 4 = 5,358,306.25
If the quotient is a whole number, then 4 and 5,358,306.25 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 | 21,433,225 | |
| -1 | 21,433,225 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 25 | 55 | 59 | 275 | 295 | 649 | 1,321 | 1,475 | 3,245 | 6,605 | 14,531 | 16,225 | 33,025 | 72,655 | 77,939 | 363,275 | 389,695 | 857,329 | 1,948,475 | 4,286,645 | 21,433,225 |
| -1 | -5 | -11 | -25 | -55 | -59 | -275 | -295 | -649 | -1,321 | -1,475 | -3,245 | -6,605 | -14,531 | -16,225 | -33,025 | -72,655 | -77,939 | -363,275 | -389,695 | -857,329 | -1,948,475 | -4,286,645 | -21,433,225 |
Here are some more numbers to try:
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