A:
Positive:
1 x 390263055 x 780526117 x 229566537 x 105476585 x 459133185 x 210953629 x 620453145 x 12409
Negative:
-1 x -39026305-5 x -7805261-17 x -2295665-37 x -1054765-85 x -459133-185 x -210953-629 x -62045-3145 x -12409
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 39,026,305, 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 | 39,026,305 | |
| -1 | -39,026,305 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 39,026,305.
Example:
1 x 39,026,305 = 39,026,305
and
-1 x -39,026,305 = 39,026,305
Notice both answers equal 39,026,305
With that explanation out of the way, let's continue. Next, we take the number 39,026,305 and divide it by 2:
39,026,305 ÷ 2 = 19,513,152.5
If the quotient is a whole number, then 2 and 19,513,152.5 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 | 39,026,305 | |
| -1 | -39,026,305 |
Now, we try dividing 39,026,305 by 3:
39,026,305 ÷ 3 = 13,008,768.3333
If the quotient is a whole number, then 3 and 13,008,768.3333 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 | 39,026,305 | |
| -1 | -39,026,305 |
Let's try dividing by 4:
39,026,305 ÷ 4 = 9,756,576.25
If the quotient is a whole number, then 4 and 9,756,576.25 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 | 39,026,305 | |
| -1 | 39,026,305 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 37 | 85 | 185 | 629 | 3,145 | 12,409 | 62,045 | 210,953 | 459,133 | 1,054,765 | 2,295,665 | 7,805,261 | 39,026,305 |
| -1 | -5 | -17 | -37 | -85 | -185 | -629 | -3,145 | -12,409 | -62,045 | -210,953 | -459,133 | -1,054,765 | -2,295,665 | -7,805,261 | -39,026,305 |
Here are some more numbers to try:
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