A:
Positive:
1 x 731171455 x 1462342941 x 178334597 x 753785205 x 356669485 x 1507573677 x 198853977 x 18385
Negative:
-1 x -73117145-5 x -14623429-41 x -1783345-97 x -753785-205 x -356669-485 x -150757-3677 x -19885-3977 x -18385
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 73,117,145, 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 | 73,117,145 | |
| -1 | -73,117,145 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 73,117,145.
Example:
1 x 73,117,145 = 73,117,145
and
-1 x -73,117,145 = 73,117,145
Notice both answers equal 73,117,145
With that explanation out of the way, let's continue. Next, we take the number 73,117,145 and divide it by 2:
73,117,145 ÷ 2 = 36,558,572.5
If the quotient is a whole number, then 2 and 36,558,572.5 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 | 73,117,145 | |
| -1 | -73,117,145 |
Now, we try dividing 73,117,145 by 3:
73,117,145 ÷ 3 = 24,372,381.6667
If the quotient is a whole number, then 3 and 24,372,381.6667 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 | 73,117,145 | |
| -1 | -73,117,145 |
Let's try dividing by 4:
73,117,145 ÷ 4 = 18,279,286.25
If the quotient is a whole number, then 4 and 18,279,286.25 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 | 73,117,145 | |
| -1 | 73,117,145 |
If you did it right, you will end up with this table:
| 1 | 5 | 41 | 97 | 205 | 485 | 3,677 | 3,977 | 18,385 | 19,885 | 150,757 | 356,669 | 753,785 | 1,783,345 | 14,623,429 | 73,117,145 |
| -1 | -5 | -41 | -97 | -205 | -485 | -3,677 | -3,977 | -18,385 | -19,885 | -150,757 | -356,669 | -753,785 | -1,783,345 | -14,623,429 | -73,117,145 |
Here are some more numbers to try:
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