A:
Positive:
1 x 7245787455 x 14491574911 x 6587079555 x 13174159293 x 24729651465 x 4945933223 x 22481516115 x 44963
Negative:
-1 x -724578745-5 x -144915749-11 x -65870795-55 x -13174159-293 x -2472965-1465 x -494593-3223 x -224815-16115 x -44963
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 724,578,745, 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 | 724,578,745 | |
| -1 | -724,578,745 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 724,578,745.
Example:
1 x 724,578,745 = 724,578,745
and
-1 x -724,578,745 = 724,578,745
Notice both answers equal 724,578,745
With that explanation out of the way, let's continue. Next, we take the number 724,578,745 and divide it by 2:
724,578,745 ÷ 2 = 362,289,372.5
If the quotient is a whole number, then 2 and 362,289,372.5 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 | 724,578,745 | |
| -1 | -724,578,745 |
Now, we try dividing 724,578,745 by 3:
724,578,745 ÷ 3 = 241,526,248.3333
If the quotient is a whole number, then 3 and 241,526,248.3333 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 | 724,578,745 | |
| -1 | -724,578,745 |
Let's try dividing by 4:
724,578,745 ÷ 4 = 181,144,686.25
If the quotient is a whole number, then 4 and 181,144,686.25 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 | 724,578,745 | |
| -1 | 724,578,745 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 293 | 1,465 | 3,223 | 16,115 | 44,963 | 224,815 | 494,593 | 2,472,965 | 13,174,159 | 65,870,795 | 144,915,749 | 724,578,745 |
| -1 | -5 | -11 | -55 | -293 | -1,465 | -3,223 | -16,115 | -44,963 | -224,815 | -494,593 | -2,472,965 | -13,174,159 | -65,870,795 | -144,915,749 | -724,578,745 |
Here are some more numbers to try:
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