A:
Positive:
1 x 402219055 x 804438173 x 550985263 x 152935365 x 110197419 x 959951315 x 305872095 x 19199
Negative:
-1 x -40221905-5 x -8044381-73 x -550985-263 x -152935-365 x -110197-419 x -95995-1315 x -30587-2095 x -19199
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 40,221,905, 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 | 40,221,905 | |
| -1 | -40,221,905 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 40,221,905.
Example:
1 x 40,221,905 = 40,221,905
and
-1 x -40,221,905 = 40,221,905
Notice both answers equal 40,221,905
With that explanation out of the way, let's continue. Next, we take the number 40,221,905 and divide it by 2:
40,221,905 ÷ 2 = 20,110,952.5
If the quotient is a whole number, then 2 and 20,110,952.5 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 | 40,221,905 | |
| -1 | -40,221,905 |
Now, we try dividing 40,221,905 by 3:
40,221,905 ÷ 3 = 13,407,301.6667
If the quotient is a whole number, then 3 and 13,407,301.6667 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 | 40,221,905 | |
| -1 | -40,221,905 |
Let's try dividing by 4:
40,221,905 ÷ 4 = 10,055,476.25
If the quotient is a whole number, then 4 and 10,055,476.25 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 | 40,221,905 | |
| -1 | 40,221,905 |
If you did it right, you will end up with this table:
| 1 | 5 | 73 | 263 | 365 | 419 | 1,315 | 2,095 | 19,199 | 30,587 | 95,995 | 110,197 | 152,935 | 550,985 | 8,044,381 | 40,221,905 |
| -1 | -5 | -73 | -263 | -365 | -419 | -1,315 | -2,095 | -19,199 | -30,587 | -95,995 | -110,197 | -152,935 | -550,985 | -8,044,381 | -40,221,905 |
Here are some more numbers to try:
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