A:
Positive:
1 x 81777855 x 16355577 x 116825511 x 74343535 x 23365155 x 14868777 x 106205121 x 67585385 x 21241605 x 13517847 x 96551931 x 4235
Negative:
-1 x -8177785-5 x -1635557-7 x -1168255-11 x -743435-35 x -233651-55 x -148687-77 x -106205-121 x -67585-385 x -21241-605 x -13517-847 x -9655-1931 x -4235
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 8,177,785, 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 | 8,177,785 | |
| -1 | -8,177,785 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 8,177,785.
Example:
1 x 8,177,785 = 8,177,785
and
-1 x -8,177,785 = 8,177,785
Notice both answers equal 8,177,785
With that explanation out of the way, let's continue. Next, we take the number 8,177,785 and divide it by 2:
8,177,785 ÷ 2 = 4,088,892.5
If the quotient is a whole number, then 2 and 4,088,892.5 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 | 8,177,785 | |
| -1 | -8,177,785 |
Now, we try dividing 8,177,785 by 3:
8,177,785 ÷ 3 = 2,725,928.3333
If the quotient is a whole number, then 3 and 2,725,928.3333 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 | 8,177,785 | |
| -1 | -8,177,785 |
Let's try dividing by 4:
8,177,785 ÷ 4 = 2,044,446.25
If the quotient is a whole number, then 4 and 2,044,446.25 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 | 8,177,785 | |
| -1 | 8,177,785 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 11 | 35 | 55 | 77 | 121 | 385 | 605 | 847 | 1,931 | 4,235 | 9,655 | 13,517 | 21,241 | 67,585 | 106,205 | 148,687 | 233,651 | 743,435 | 1,168,255 | 1,635,557 | 8,177,785 |
| -1 | -5 | -7 | -11 | -35 | -55 | -77 | -121 | -385 | -605 | -847 | -1,931 | -4,235 | -9,655 | -13,517 | -21,241 | -67,585 | -106,205 | -148,687 | -233,651 | -743,435 | -1,168,255 | -1,635,557 | -8,177,785 |
Here are some more numbers to try:
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