A:
Positive:
1 x 258173055 x 516346117 x 151866537 x 69776585 x 303733185 x 139553629 x 410453145 x 8209
Negative:
-1 x -25817305-5 x -5163461-17 x -1518665-37 x -697765-85 x -303733-185 x -139553-629 x -41045-3145 x -8209
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 25,817,305, 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 | 25,817,305 | |
| -1 | -25,817,305 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,817,305.
Example:
1 x 25,817,305 = 25,817,305
and
-1 x -25,817,305 = 25,817,305
Notice both answers equal 25,817,305
With that explanation out of the way, let's continue. Next, we take the number 25,817,305 and divide it by 2:
25,817,305 ÷ 2 = 12,908,652.5
If the quotient is a whole number, then 2 and 12,908,652.5 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 | 25,817,305 | |
| -1 | -25,817,305 |
Now, we try dividing 25,817,305 by 3:
25,817,305 ÷ 3 = 8,605,768.3333
If the quotient is a whole number, then 3 and 8,605,768.3333 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 | 25,817,305 | |
| -1 | -25,817,305 |
Let's try dividing by 4:
25,817,305 ÷ 4 = 6,454,326.25
If the quotient is a whole number, then 4 and 6,454,326.25 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 | 25,817,305 | |
| -1 | 25,817,305 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 37 | 85 | 185 | 629 | 3,145 | 8,209 | 41,045 | 139,553 | 303,733 | 697,765 | 1,518,665 | 5,163,461 | 25,817,305 |
| -1 | -5 | -17 | -37 | -85 | -185 | -629 | -3,145 | -8,209 | -41,045 | -139,553 | -303,733 | -697,765 | -1,518,665 | -5,163,461 | -25,817,305 |
Here are some more numbers to try:
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