A:
Positive:
1 x 253550155 x 50710037 x 362214535 x 72442941 x 618415205 x 123683287 x 883451435 x 17669
Negative:
-1 x -25355015-5 x -5071003-7 x -3622145-35 x -724429-41 x -618415-205 x -123683-287 x -88345-1435 x -17669
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 25,355,015, 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 | 25,355,015 | |
| -1 | -25,355,015 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,355,015.
Example:
1 x 25,355,015 = 25,355,015
and
-1 x -25,355,015 = 25,355,015
Notice both answers equal 25,355,015
With that explanation out of the way, let's continue. Next, we take the number 25,355,015 and divide it by 2:
25,355,015 ÷ 2 = 12,677,507.5
If the quotient is a whole number, then 2 and 12,677,507.5 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 | 25,355,015 | |
| -1 | -25,355,015 |
Now, we try dividing 25,355,015 by 3:
25,355,015 ÷ 3 = 8,451,671.6667
If the quotient is a whole number, then 3 and 8,451,671.6667 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 | 25,355,015 | |
| -1 | -25,355,015 |
Let's try dividing by 4:
25,355,015 ÷ 4 = 6,338,753.75
If the quotient is a whole number, then 4 and 6,338,753.75 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 | 25,355,015 | |
| -1 | 25,355,015 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 41 | 205 | 287 | 1,435 | 17,669 | 88,345 | 123,683 | 618,415 | 724,429 | 3,622,145 | 5,071,003 | 25,355,015 |
| -1 | -5 | -7 | -35 | -41 | -205 | -287 | -1,435 | -17,669 | -88,345 | -123,683 | -618,415 | -724,429 | -3,622,145 | -5,071,003 | -25,355,015 |
Here are some more numbers to try:
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