A:
Positive:
1 x 162213355 x 324426713 x 124779565 x 249559479 x 33865521 x 311352395 x 67732605 x 6227
Negative:
-1 x -16221335-5 x -3244267-13 x -1247795-65 x -249559-479 x -33865-521 x -31135-2395 x -6773-2605 x -6227
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 16,221,335, 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 | 16,221,335 | |
| -1 | -16,221,335 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 16,221,335.
Example:
1 x 16,221,335 = 16,221,335
and
-1 x -16,221,335 = 16,221,335
Notice both answers equal 16,221,335
With that explanation out of the way, let's continue. Next, we take the number 16,221,335 and divide it by 2:
16,221,335 ÷ 2 = 8,110,667.5
If the quotient is a whole number, then 2 and 8,110,667.5 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 | 16,221,335 | |
| -1 | -16,221,335 |
Now, we try dividing 16,221,335 by 3:
16,221,335 ÷ 3 = 5,407,111.6667
If the quotient is a whole number, then 3 and 5,407,111.6667 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 | 16,221,335 | |
| -1 | -16,221,335 |
Let's try dividing by 4:
16,221,335 ÷ 4 = 4,055,333.75
If the quotient is a whole number, then 4 and 4,055,333.75 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 | 16,221,335 | |
| -1 | 16,221,335 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 479 | 521 | 2,395 | 2,605 | 6,227 | 6,773 | 31,135 | 33,865 | 249,559 | 1,247,795 | 3,244,267 | 16,221,335 |
| -1 | -5 | -13 | -65 | -479 | -521 | -2,395 | -2,605 | -6,227 | -6,773 | -31,135 | -33,865 | -249,559 | -1,247,795 | -3,244,267 | -16,221,335 |
Here are some more numbers to try:
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