A:
Positive:
1 x 877721911 x 79792917 x 516307121 x 72539187 x 46937251 x 34969289 x 303712057 x 42672761 x 3179
Negative:
-1 x -8777219-11 x -797929-17 x -516307-121 x -72539-187 x -46937-251 x -34969-289 x -30371-2057 x -4267-2761 x -3179
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 8,777,219, 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 | 8,777,219 | |
| -1 | -8,777,219 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 8,777,219.
Example:
1 x 8,777,219 = 8,777,219
and
-1 x -8,777,219 = 8,777,219
Notice both answers equal 8,777,219
With that explanation out of the way, let's continue. Next, we take the number 8,777,219 and divide it by 2:
8,777,219 ÷ 2 = 4,388,609.5
If the quotient is a whole number, then 2 and 4,388,609.5 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 | 8,777,219 | |
| -1 | -8,777,219 |
Now, we try dividing 8,777,219 by 3:
8,777,219 ÷ 3 = 2,925,739.6667
If the quotient is a whole number, then 3 and 2,925,739.6667 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 | 8,777,219 | |
| -1 | -8,777,219 |
Let's try dividing by 4:
8,777,219 ÷ 4 = 2,194,304.75
If the quotient is a whole number, then 4 and 2,194,304.75 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 | 8,777,219 | |
| -1 | 8,777,219 |
If you did it right, you will end up with this table:
| 1 | 11 | 17 | 121 | 187 | 251 | 289 | 2,057 | 2,761 | 3,179 | 4,267 | 30,371 | 34,969 | 46,937 | 72,539 | 516,307 | 797,929 | 8,777,219 |
| -1 | -11 | -17 | -121 | -187 | -251 | -289 | -2,057 | -2,761 | -3,179 | -4,267 | -30,371 | -34,969 | -46,937 | -72,539 | -516,307 | -797,929 | -8,777,219 |
Here are some more numbers to try:
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