A:
Positive:
1 x 723088737 x 1032983913 x 556222191 x 794603353 x 2048412251 x 321232471 x 292634589 x 15757
Negative:
-1 x -72308873-7 x -10329839-13 x -5562221-91 x -794603-353 x -204841-2251 x -32123-2471 x -29263-4589 x -15757
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 72,308,873, 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 | 72,308,873 | |
| -1 | -72,308,873 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 72,308,873.
Example:
1 x 72,308,873 = 72,308,873
and
-1 x -72,308,873 = 72,308,873
Notice both answers equal 72,308,873
With that explanation out of the way, let's continue. Next, we take the number 72,308,873 and divide it by 2:
72,308,873 ÷ 2 = 36,154,436.5
If the quotient is a whole number, then 2 and 36,154,436.5 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 | 72,308,873 | |
| -1 | -72,308,873 |
Now, we try dividing 72,308,873 by 3:
72,308,873 ÷ 3 = 24,102,957.6667
If the quotient is a whole number, then 3 and 24,102,957.6667 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 | 72,308,873 | |
| -1 | -72,308,873 |
Let's try dividing by 4:
72,308,873 ÷ 4 = 18,077,218.25
If the quotient is a whole number, then 4 and 18,077,218.25 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 | 72,308,873 | |
| -1 | 72,308,873 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 91 | 353 | 2,251 | 2,471 | 4,589 | 15,757 | 29,263 | 32,123 | 204,841 | 794,603 | 5,562,221 | 10,329,839 | 72,308,873 |
| -1 | -7 | -13 | -91 | -353 | -2,251 | -2,471 | -4,589 | -15,757 | -29,263 | -32,123 | -204,841 | -794,603 | -5,562,221 | -10,329,839 | -72,308,873 |
Here are some more numbers to try:
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