A:
Positive:
1 x 257601055 x 51520217 x 368001519 x 135579535 x 73600395 x 271159133 x 193685665 x 38737
Negative:
-1 x -25760105-5 x -5152021-7 x -3680015-19 x -1355795-35 x -736003-95 x -271159-133 x -193685-665 x -38737
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 25,760,105, 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 | 25,760,105 | |
| -1 | -25,760,105 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,760,105.
Example:
1 x 25,760,105 = 25,760,105
and
-1 x -25,760,105 = 25,760,105
Notice both answers equal 25,760,105
With that explanation out of the way, let's continue. Next, we take the number 25,760,105 and divide it by 2:
25,760,105 ÷ 2 = 12,880,052.5
If the quotient is a whole number, then 2 and 12,880,052.5 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 | 25,760,105 | |
| -1 | -25,760,105 |
Now, we try dividing 25,760,105 by 3:
25,760,105 ÷ 3 = 8,586,701.6667
If the quotient is a whole number, then 3 and 8,586,701.6667 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 | 25,760,105 | |
| -1 | -25,760,105 |
Let's try dividing by 4:
25,760,105 ÷ 4 = 6,440,026.25
If the quotient is a whole number, then 4 and 6,440,026.25 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 | 25,760,105 | |
| -1 | 25,760,105 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 19 | 35 | 95 | 133 | 665 | 38,737 | 193,685 | 271,159 | 736,003 | 1,355,795 | 3,680,015 | 5,152,021 | 25,760,105 |
| -1 | -5 | -7 | -19 | -35 | -95 | -133 | -665 | -38,737 | -193,685 | -271,159 | -736,003 | -1,355,795 | -3,680,015 | -5,152,021 | -25,760,105 |
Here are some more numbers to try:
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