A:
Positive:
1 x 214423255 x 428846523 x 93227525 x 85769389 x 240925115 x 186455419 x 51175445 x 48185575 x 372912047 x 104752095 x 102352225 x 9637
Negative:
-1 x -21442325-5 x -4288465-23 x -932275-25 x -857693-89 x -240925-115 x -186455-419 x -51175-445 x -48185-575 x -37291-2047 x -10475-2095 x -10235-2225 x -9637
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 21,442,325, 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 | 21,442,325 | |
| -1 | -21,442,325 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 21,442,325.
Example:
1 x 21,442,325 = 21,442,325
and
-1 x -21,442,325 = 21,442,325
Notice both answers equal 21,442,325
With that explanation out of the way, let's continue. Next, we take the number 21,442,325 and divide it by 2:
21,442,325 ÷ 2 = 10,721,162.5
If the quotient is a whole number, then 2 and 10,721,162.5 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 | 21,442,325 | |
| -1 | -21,442,325 |
Now, we try dividing 21,442,325 by 3:
21,442,325 ÷ 3 = 7,147,441.6667
If the quotient is a whole number, then 3 and 7,147,441.6667 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 | 21,442,325 | |
| -1 | -21,442,325 |
Let's try dividing by 4:
21,442,325 ÷ 4 = 5,360,581.25
If the quotient is a whole number, then 4 and 5,360,581.25 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 | 21,442,325 | |
| -1 | 21,442,325 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 25 | 89 | 115 | 419 | 445 | 575 | 2,047 | 2,095 | 2,225 | 9,637 | 10,235 | 10,475 | 37,291 | 48,185 | 51,175 | 186,455 | 240,925 | 857,693 | 932,275 | 4,288,465 | 21,442,325 |
| -1 | -5 | -23 | -25 | -89 | -115 | -419 | -445 | -575 | -2,047 | -2,095 | -2,225 | -9,637 | -10,235 | -10,475 | -37,291 | -48,185 | -51,175 | -186,455 | -240,925 | -857,693 | -932,275 | -4,288,465 | -21,442,325 |
Here are some more numbers to try:
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