A:
Positive:
1 x 178086055 x 356172117 x 104756519 x 93729585 x 20951395 x 187459323 x 551351615 x 11027
Negative:
-1 x -17808605-5 x -3561721-17 x -1047565-19 x -937295-85 x -209513-95 x -187459-323 x -55135-1615 x -11027
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 17,808,605, 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 | 17,808,605 | |
| -1 | -17,808,605 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 17,808,605.
Example:
1 x 17,808,605 = 17,808,605
and
-1 x -17,808,605 = 17,808,605
Notice both answers equal 17,808,605
With that explanation out of the way, let's continue. Next, we take the number 17,808,605 and divide it by 2:
17,808,605 ÷ 2 = 8,904,302.5
If the quotient is a whole number, then 2 and 8,904,302.5 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 | 17,808,605 | |
| -1 | -17,808,605 |
Now, we try dividing 17,808,605 by 3:
17,808,605 ÷ 3 = 5,936,201.6667
If the quotient is a whole number, then 3 and 5,936,201.6667 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 | 17,808,605 | |
| -1 | -17,808,605 |
Let's try dividing by 4:
17,808,605 ÷ 4 = 4,452,151.25
If the quotient is a whole number, then 4 and 4,452,151.25 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 | 17,808,605 | |
| -1 | 17,808,605 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 19 | 85 | 95 | 323 | 1,615 | 11,027 | 55,135 | 187,459 | 209,513 | 937,295 | 1,047,565 | 3,561,721 | 17,808,605 |
| -1 | -5 | -17 | -19 | -85 | -95 | -323 | -1,615 | -11,027 | -55,135 | -187,459 | -209,513 | -937,295 | -1,047,565 | -3,561,721 | -17,808,605 |
Here are some more numbers to try:
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