A:
Positive:
1 x 25824841117 x 1519108343 x 6005777401 x 644011731 x 353281881 x 2931316817 x 3788314977 x 17243
Negative:
-1 x -258248411-17 x -15191083-43 x -6005777-401 x -644011-731 x -353281-881 x -293131-6817 x -37883-14977 x -17243
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 258,248,411, 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 | 258,248,411 | |
| -1 | -258,248,411 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 258,248,411.
Example:
1 x 258,248,411 = 258,248,411
and
-1 x -258,248,411 = 258,248,411
Notice both answers equal 258,248,411
With that explanation out of the way, let's continue. Next, we take the number 258,248,411 and divide it by 2:
258,248,411 ÷ 2 = 129,124,205.5
If the quotient is a whole number, then 2 and 129,124,205.5 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 | 258,248,411 | |
| -1 | -258,248,411 |
Now, we try dividing 258,248,411 by 3:
258,248,411 ÷ 3 = 86,082,803.6667
If the quotient is a whole number, then 3 and 86,082,803.6667 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 | 258,248,411 | |
| -1 | -258,248,411 |
Let's try dividing by 4:
258,248,411 ÷ 4 = 64,562,102.75
If the quotient is a whole number, then 4 and 64,562,102.75 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 | 258,248,411 | |
| -1 | 258,248,411 |
If you did it right, you will end up with this table:
| 1 | 17 | 43 | 401 | 731 | 881 | 6,817 | 14,977 | 17,243 | 37,883 | 293,131 | 353,281 | 644,011 | 6,005,777 | 15,191,083 | 258,248,411 |
| -1 | -17 | -43 | -401 | -731 | -881 | -6,817 | -14,977 | -17,243 | -37,883 | -293,131 | -353,281 | -644,011 | -6,005,777 | -15,191,083 | -258,248,411 |
Here are some more numbers to try:
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