A:
Positive:
1 x 24541452111 x 22310411239 x 1026839277 x 885973337 x 7282332629 x 933493047 x 805433707 x 66203
Negative:
-1 x -245414521-11 x -22310411-239 x -1026839-277 x -885973-337 x -728233-2629 x -93349-3047 x -80543-3707 x -66203
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 245,414,521, 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 | 245,414,521 | |
| -1 | -245,414,521 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 245,414,521.
Example:
1 x 245,414,521 = 245,414,521
and
-1 x -245,414,521 = 245,414,521
Notice both answers equal 245,414,521
With that explanation out of the way, let's continue. Next, we take the number 245,414,521 and divide it by 2:
245,414,521 ÷ 2 = 122,707,260.5
If the quotient is a whole number, then 2 and 122,707,260.5 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 | 245,414,521 | |
| -1 | -245,414,521 |
Now, we try dividing 245,414,521 by 3:
245,414,521 ÷ 3 = 81,804,840.3333
If the quotient is a whole number, then 3 and 81,804,840.3333 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 | 245,414,521 | |
| -1 | -245,414,521 |
Let's try dividing by 4:
245,414,521 ÷ 4 = 61,353,630.25
If the quotient is a whole number, then 4 and 61,353,630.25 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 | 245,414,521 | |
| -1 | 245,414,521 |
If you did it right, you will end up with this table:
| 1 | 11 | 239 | 277 | 337 | 2,629 | 3,047 | 3,707 | 66,203 | 80,543 | 93,349 | 728,233 | 885,973 | 1,026,839 | 22,310,411 | 245,414,521 |
| -1 | -11 | -239 | -277 | -337 | -2,629 | -3,047 | -3,707 | -66,203 | -80,543 | -93,349 | -728,233 | -885,973 | -1,026,839 | -22,310,411 | -245,414,521 |
Here are some more numbers to try:
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