A:
Positive:
1 x 253566055 x 507132117 x 149156531 x 81795585 x 298313155 x 163591527 x 481152635 x 9623
Negative:
-1 x -25356605-5 x -5071321-17 x -1491565-31 x -817955-85 x -298313-155 x -163591-527 x -48115-2635 x -9623
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 25,356,605, 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 | 25,356,605 | |
| -1 | -25,356,605 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,356,605.
Example:
1 x 25,356,605 = 25,356,605
and
-1 x -25,356,605 = 25,356,605
Notice both answers equal 25,356,605
With that explanation out of the way, let's continue. Next, we take the number 25,356,605 and divide it by 2:
25,356,605 ÷ 2 = 12,678,302.5
If the quotient is a whole number, then 2 and 12,678,302.5 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 | 25,356,605 | |
| -1 | -25,356,605 |
Now, we try dividing 25,356,605 by 3:
25,356,605 ÷ 3 = 8,452,201.6667
If the quotient is a whole number, then 3 and 8,452,201.6667 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 | 25,356,605 | |
| -1 | -25,356,605 |
Let's try dividing by 4:
25,356,605 ÷ 4 = 6,339,151.25
If the quotient is a whole number, then 4 and 6,339,151.25 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 | 25,356,605 | |
| -1 | 25,356,605 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 31 | 85 | 155 | 527 | 2,635 | 9,623 | 48,115 | 163,591 | 298,313 | 817,955 | 1,491,565 | 5,071,321 | 25,356,605 |
| -1 | -5 | -17 | -31 | -85 | -155 | -527 | -2,635 | -9,623 | -48,115 | -163,591 | -298,313 | -817,955 | -1,491,565 | -5,071,321 | -25,356,605 |
Here are some more numbers to try:
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