A:
Positive:
1 x 178000455 x 356000923 x 77391531 x 574195115 x 154783155 x 114839713 x 249653565 x 4993
Negative:
-1 x -17800045-5 x -3560009-23 x -773915-31 x -574195-115 x -154783-155 x -114839-713 x -24965-3565 x -4993
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 17,800,045, 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 | 17,800,045 | |
| -1 | -17,800,045 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 17,800,045.
Example:
1 x 17,800,045 = 17,800,045
and
-1 x -17,800,045 = 17,800,045
Notice both answers equal 17,800,045
With that explanation out of the way, let's continue. Next, we take the number 17,800,045 and divide it by 2:
17,800,045 ÷ 2 = 8,900,022.5
If the quotient is a whole number, then 2 and 8,900,022.5 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 | 17,800,045 | |
| -1 | -17,800,045 |
Now, we try dividing 17,800,045 by 3:
17,800,045 ÷ 3 = 5,933,348.3333
If the quotient is a whole number, then 3 and 5,933,348.3333 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 | 17,800,045 | |
| -1 | -17,800,045 |
Let's try dividing by 4:
17,800,045 ÷ 4 = 4,450,011.25
If the quotient is a whole number, then 4 and 4,450,011.25 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 | 17,800,045 | |
| -1 | 17,800,045 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 31 | 115 | 155 | 713 | 3,565 | 4,993 | 24,965 | 114,839 | 154,783 | 574,195 | 773,915 | 3,560,009 | 17,800,045 |
| -1 | -5 | -23 | -31 | -115 | -155 | -713 | -3,565 | -4,993 | -24,965 | -114,839 | -154,783 | -574,195 | -773,915 | -3,560,009 | -17,800,045 |
Here are some more numbers to try:
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