A:
Positive:
1 x 90996055 x 181992123 x 39563567 x 135815115 x 79127335 x 271631181 x 77051541 x 5905
Negative:
-1 x -9099605-5 x -1819921-23 x -395635-67 x -135815-115 x -79127-335 x -27163-1181 x -7705-1541 x -5905
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 9,099,605, 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 | 9,099,605 | |
| -1 | -9,099,605 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 9,099,605.
Example:
1 x 9,099,605 = 9,099,605
and
-1 x -9,099,605 = 9,099,605
Notice both answers equal 9,099,605
With that explanation out of the way, let's continue. Next, we take the number 9,099,605 and divide it by 2:
9,099,605 ÷ 2 = 4,549,802.5
If the quotient is a whole number, then 2 and 4,549,802.5 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 | 9,099,605 | |
| -1 | -9,099,605 |
Now, we try dividing 9,099,605 by 3:
9,099,605 ÷ 3 = 3,033,201.6667
If the quotient is a whole number, then 3 and 3,033,201.6667 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 | 9,099,605 | |
| -1 | -9,099,605 |
Let's try dividing by 4:
9,099,605 ÷ 4 = 2,274,901.25
If the quotient is a whole number, then 4 and 2,274,901.25 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 | 9,099,605 | |
| -1 | 9,099,605 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 67 | 115 | 335 | 1,181 | 1,541 | 5,905 | 7,705 | 27,163 | 79,127 | 135,815 | 395,635 | 1,819,921 | 9,099,605 |
| -1 | -5 | -23 | -67 | -115 | -335 | -1,181 | -1,541 | -5,905 | -7,705 | -27,163 | -79,127 | -135,815 | -395,635 | -1,819,921 | -9,099,605 |
Here are some more numbers to try:
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