A:
Positive:
1 x 727314355 x 145462877 x 1039020535 x 207804149 x 1484315245 x 296863343 x 2120451715 x 42409
Negative:
-1 x -72731435-5 x -14546287-7 x -10390205-35 x -2078041-49 x -1484315-245 x -296863-343 x -212045-1715 x -42409
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 72,731,435, 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 | 72,731,435 | |
| -1 | -72,731,435 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 72,731,435.
Example:
1 x 72,731,435 = 72,731,435
and
-1 x -72,731,435 = 72,731,435
Notice both answers equal 72,731,435
With that explanation out of the way, let's continue. Next, we take the number 72,731,435 and divide it by 2:
72,731,435 ÷ 2 = 36,365,717.5
If the quotient is a whole number, then 2 and 36,365,717.5 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 | 72,731,435 | |
| -1 | -72,731,435 |
Now, we try dividing 72,731,435 by 3:
72,731,435 ÷ 3 = 24,243,811.6667
If the quotient is a whole number, then 3 and 24,243,811.6667 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 | 72,731,435 | |
| -1 | -72,731,435 |
Let's try dividing by 4:
72,731,435 ÷ 4 = 18,182,858.75
If the quotient is a whole number, then 4 and 18,182,858.75 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 | 72,731,435 | |
| -1 | 72,731,435 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 49 | 245 | 343 | 1,715 | 42,409 | 212,045 | 296,863 | 1,484,315 | 2,078,041 | 10,390,205 | 14,546,287 | 72,731,435 |
| -1 | -5 | -7 | -35 | -49 | -245 | -343 | -1,715 | -42,409 | -212,045 | -296,863 | -1,484,315 | -2,078,041 | -10,390,205 | -14,546,287 | -72,731,435 |
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