A:
Positive:
1 x 7432473855 x 14864947741 x 18127985101 x 7358885205 x 3625597505 x 14717774141 x 17948520705 x 35897
Negative:
-1 x -743247385-5 x -148649477-41 x -18127985-101 x -7358885-205 x -3625597-505 x -1471777-4141 x -179485-20705 x -35897
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 743,247,385, 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 | 743,247,385 | |
| -1 | -743,247,385 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 743,247,385.
Example:
1 x 743,247,385 = 743,247,385
and
-1 x -743,247,385 = 743,247,385
Notice both answers equal 743,247,385
With that explanation out of the way, let's continue. Next, we take the number 743,247,385 and divide it by 2:
743,247,385 ÷ 2 = 371,623,692.5
If the quotient is a whole number, then 2 and 371,623,692.5 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 | 743,247,385 | |
| -1 | -743,247,385 |
Now, we try dividing 743,247,385 by 3:
743,247,385 ÷ 3 = 247,749,128.3333
If the quotient is a whole number, then 3 and 247,749,128.3333 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 | 743,247,385 | |
| -1 | -743,247,385 |
Let's try dividing by 4:
743,247,385 ÷ 4 = 185,811,846.25
If the quotient is a whole number, then 4 and 185,811,846.25 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 | 743,247,385 | |
| -1 | 743,247,385 |
If you did it right, you will end up with this table:
| 1 | 5 | 41 | 101 | 205 | 505 | 4,141 | 20,705 | 35,897 | 179,485 | 1,471,777 | 3,625,597 | 7,358,885 | 18,127,985 | 148,649,477 | 743,247,385 |
| -1 | -5 | -41 | -101 | -205 | -505 | -4,141 | -20,705 | -35,897 | -179,485 | -1,471,777 | -3,625,597 | -7,358,885 | -18,127,985 | -148,649,477 | -743,247,385 |
Here are some more numbers to try:
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