A:
Positive:
1 x 4224021113 x 324924719 x 222316929 x 1456559247 x 171013377 x 112043551 x 766615897 x 7163
Negative:
-1 x -42240211-13 x -3249247-19 x -2223169-29 x -1456559-247 x -171013-377 x -112043-551 x -76661-5897 x -7163
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 42,240,211, 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 | 42,240,211 | |
| -1 | -42,240,211 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 42,240,211.
Example:
1 x 42,240,211 = 42,240,211
and
-1 x -42,240,211 = 42,240,211
Notice both answers equal 42,240,211
With that explanation out of the way, let's continue. Next, we take the number 42,240,211 and divide it by 2:
42,240,211 ÷ 2 = 21,120,105.5
If the quotient is a whole number, then 2 and 21,120,105.5 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 | 42,240,211 | |
| -1 | -42,240,211 |
Now, we try dividing 42,240,211 by 3:
42,240,211 ÷ 3 = 14,080,070.3333
If the quotient is a whole number, then 3 and 14,080,070.3333 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 | 42,240,211 | |
| -1 | -42,240,211 |
Let's try dividing by 4:
42,240,211 ÷ 4 = 10,560,052.75
If the quotient is a whole number, then 4 and 10,560,052.75 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 | 42,240,211 | |
| -1 | 42,240,211 |
If you did it right, you will end up with this table:
| 1 | 13 | 19 | 29 | 247 | 377 | 551 | 5,897 | 7,163 | 76,661 | 112,043 | 171,013 | 1,456,559 | 2,223,169 | 3,249,247 | 42,240,211 |
| -1 | -13 | -19 | -29 | -247 | -377 | -551 | -5,897 | -7,163 | -76,661 | -112,043 | -171,013 | -1,456,559 | -2,223,169 | -3,249,247 | -42,240,211 |
Here are some more numbers to try:
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