A:
Positive:
1 x 7243086137 x 10347265917 x 42606389119 x 6086627619 x 11701274333 x 1671619833 x 7366110523 x 68831
Negative:
-1 x -724308613-7 x -103472659-17 x -42606389-119 x -6086627-619 x -1170127-4333 x -167161-9833 x -73661-10523 x -68831
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 724,308,613, 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 | 724,308,613 | |
| -1 | -724,308,613 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 724,308,613.
Example:
1 x 724,308,613 = 724,308,613
and
-1 x -724,308,613 = 724,308,613
Notice both answers equal 724,308,613
With that explanation out of the way, let's continue. Next, we take the number 724,308,613 and divide it by 2:
724,308,613 ÷ 2 = 362,154,306.5
If the quotient is a whole number, then 2 and 362,154,306.5 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 | 724,308,613 | |
| -1 | -724,308,613 |
Now, we try dividing 724,308,613 by 3:
724,308,613 ÷ 3 = 241,436,204.3333
If the quotient is a whole number, then 3 and 241,436,204.3333 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 | 724,308,613 | |
| -1 | -724,308,613 |
Let's try dividing by 4:
724,308,613 ÷ 4 = 181,077,153.25
If the quotient is a whole number, then 4 and 181,077,153.25 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 | 724,308,613 | |
| -1 | 724,308,613 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 119 | 619 | 4,333 | 9,833 | 10,523 | 68,831 | 73,661 | 167,161 | 1,170,127 | 6,086,627 | 42,606,389 | 103,472,659 | 724,308,613 |
| -1 | -7 | -17 | -119 | -619 | -4,333 | -9,833 | -10,523 | -68,831 | -73,661 | -167,161 | -1,170,127 | -6,086,627 | -42,606,389 | -103,472,659 | -724,308,613 |
Here are some more numbers to try:
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