A:
Positive:
1 x 720884455 x 1441768911 x 655349513 x 554526555 x 131069965 x 1109053143 x 504115715 x 100823
Negative:
-1 x -72088445-5 x -14417689-11 x -6553495-13 x -5545265-55 x -1310699-65 x -1109053-143 x -504115-715 x -100823
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 72,088,445, 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 | 72,088,445 | |
| -1 | -72,088,445 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 72,088,445.
Example:
1 x 72,088,445 = 72,088,445
and
-1 x -72,088,445 = 72,088,445
Notice both answers equal 72,088,445
With that explanation out of the way, let's continue. Next, we take the number 72,088,445 and divide it by 2:
72,088,445 ÷ 2 = 36,044,222.5
If the quotient is a whole number, then 2 and 36,044,222.5 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 | 72,088,445 | |
| -1 | -72,088,445 |
Now, we try dividing 72,088,445 by 3:
72,088,445 ÷ 3 = 24,029,481.6667
If the quotient is a whole number, then 3 and 24,029,481.6667 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 | 72,088,445 | |
| -1 | -72,088,445 |
Let's try dividing by 4:
72,088,445 ÷ 4 = 18,022,111.25
If the quotient is a whole number, then 4 and 18,022,111.25 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 | 72,088,445 | |
| -1 | 72,088,445 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 13 | 55 | 65 | 143 | 715 | 100,823 | 504,115 | 1,109,053 | 1,310,699 | 5,545,265 | 6,553,495 | 14,417,689 | 72,088,445 |
| -1 | -5 | -11 | -13 | -55 | -65 | -143 | -715 | -100,823 | -504,115 | -1,109,053 | -1,310,699 | -5,545,265 | -6,553,495 | -14,417,689 | -72,088,445 |
Here are some more numbers to try:
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