A:
Positive:
1 x 2456424255 x 491284857 x 3509177525 x 982569735 x 701835561 x 4026925175 x 1403671305 x 805385427 x 5752751525 x 1610772135 x 11505510675 x 23011
Negative:
-1 x -245642425-5 x -49128485-7 x -35091775-25 x -9825697-35 x -7018355-61 x -4026925-175 x -1403671-305 x -805385-427 x -575275-1525 x -161077-2135 x -115055-10675 x -23011
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 245,642,425, 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 | 245,642,425 | |
| -1 | -245,642,425 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 245,642,425.
Example:
1 x 245,642,425 = 245,642,425
and
-1 x -245,642,425 = 245,642,425
Notice both answers equal 245,642,425
With that explanation out of the way, let's continue. Next, we take the number 245,642,425 and divide it by 2:
245,642,425 ÷ 2 = 122,821,212.5
If the quotient is a whole number, then 2 and 122,821,212.5 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 | 245,642,425 | |
| -1 | -245,642,425 |
Now, we try dividing 245,642,425 by 3:
245,642,425 ÷ 3 = 81,880,808.3333
If the quotient is a whole number, then 3 and 81,880,808.3333 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 | 245,642,425 | |
| -1 | -245,642,425 |
Let's try dividing by 4:
245,642,425 ÷ 4 = 61,410,606.25
If the quotient is a whole number, then 4 and 61,410,606.25 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 | 245,642,425 | |
| -1 | 245,642,425 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 25 | 35 | 61 | 175 | 305 | 427 | 1,525 | 2,135 | 10,675 | 23,011 | 115,055 | 161,077 | 575,275 | 805,385 | 1,403,671 | 4,026,925 | 7,018,355 | 9,825,697 | 35,091,775 | 49,128,485 | 245,642,425 |
| -1 | -5 | -7 | -25 | -35 | -61 | -175 | -305 | -427 | -1,525 | -2,135 | -10,675 | -23,011 | -115,055 | -161,077 | -575,275 | -805,385 | -1,403,671 | -4,026,925 | -7,018,355 | -9,825,697 | -35,091,775 | -49,128,485 | -245,642,425 |
Here are some more numbers to try:
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