A:
Positive:
1 x 727656055 x 1455312111 x 661505555 x 1323011467 x 1558152335 x 311632833 x 256855137 x 14165
Negative:
-1 x -72765605-5 x -14553121-11 x -6615055-55 x -1323011-467 x -155815-2335 x -31163-2833 x -25685-5137 x -14165
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 72,765,605, 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 | 72,765,605 | |
| -1 | -72,765,605 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 72,765,605.
Example:
1 x 72,765,605 = 72,765,605
and
-1 x -72,765,605 = 72,765,605
Notice both answers equal 72,765,605
With that explanation out of the way, let's continue. Next, we take the number 72,765,605 and divide it by 2:
72,765,605 ÷ 2 = 36,382,802.5
If the quotient is a whole number, then 2 and 36,382,802.5 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 | 72,765,605 | |
| -1 | -72,765,605 |
Now, we try dividing 72,765,605 by 3:
72,765,605 ÷ 3 = 24,255,201.6667
If the quotient is a whole number, then 3 and 24,255,201.6667 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 | 72,765,605 | |
| -1 | -72,765,605 |
Let's try dividing by 4:
72,765,605 ÷ 4 = 18,191,401.25
If the quotient is a whole number, then 4 and 18,191,401.25 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 | 72,765,605 | |
| -1 | 72,765,605 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 467 | 2,335 | 2,833 | 5,137 | 14,165 | 25,685 | 31,163 | 155,815 | 1,323,011 | 6,615,055 | 14,553,121 | 72,765,605 |
| -1 | -5 | -11 | -55 | -467 | -2,335 | -2,833 | -5,137 | -14,165 | -25,685 | -31,163 | -155,815 | -1,323,011 | -6,615,055 | -14,553,121 | -72,765,605 |
Here are some more numbers to try:
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