A:
Positive:
1 x 255001455 x 510002911 x 231819555 x 463639113 x 225665121 x 210745373 x 68365565 x 45133605 x 421491243 x 205151865 x 136734103 x 6215
Negative:
-1 x -25500145-5 x -5100029-11 x -2318195-55 x -463639-113 x -225665-121 x -210745-373 x -68365-565 x -45133-605 x -42149-1243 x -20515-1865 x -13673-4103 x -6215
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 25,500,145, 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 | 25,500,145 | |
| -1 | -25,500,145 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,500,145.
Example:
1 x 25,500,145 = 25,500,145
and
-1 x -25,500,145 = 25,500,145
Notice both answers equal 25,500,145
With that explanation out of the way, let's continue. Next, we take the number 25,500,145 and divide it by 2:
25,500,145 ÷ 2 = 12,750,072.5
If the quotient is a whole number, then 2 and 12,750,072.5 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 | 25,500,145 | |
| -1 | -25,500,145 |
Now, we try dividing 25,500,145 by 3:
25,500,145 ÷ 3 = 8,500,048.3333
If the quotient is a whole number, then 3 and 8,500,048.3333 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 | 25,500,145 | |
| -1 | -25,500,145 |
Let's try dividing by 4:
25,500,145 ÷ 4 = 6,375,036.25
If the quotient is a whole number, then 4 and 6,375,036.25 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 | 25,500,145 | |
| -1 | 25,500,145 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 113 | 121 | 373 | 565 | 605 | 1,243 | 1,865 | 4,103 | 6,215 | 13,673 | 20,515 | 42,149 | 45,133 | 68,365 | 210,745 | 225,665 | 463,639 | 2,318,195 | 5,100,029 | 25,500,145 |
| -1 | -5 | -11 | -55 | -113 | -121 | -373 | -565 | -605 | -1,243 | -1,865 | -4,103 | -6,215 | -13,673 | -20,515 | -42,149 | -45,133 | -68,365 | -210,745 | -225,665 | -463,639 | -2,318,195 | -5,100,029 | -25,500,145 |
Here are some more numbers to try:
Try the factor calculator