A:
Positive:
1 x 282400255 x 564800511 x 256727525 x 112960155 x 513455103 x 274175275 x 102691515 x 54835997 x 283251133 x 249252575 x 109674985 x 5665
Negative:
-1 x -28240025-5 x -5648005-11 x -2567275-25 x -1129601-55 x -513455-103 x -274175-275 x -102691-515 x -54835-997 x -28325-1133 x -24925-2575 x -10967-4985 x -5665
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 28,240,025, 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 | 28,240,025 | |
| -1 | -28,240,025 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 28,240,025.
Example:
1 x 28,240,025 = 28,240,025
and
-1 x -28,240,025 = 28,240,025
Notice both answers equal 28,240,025
With that explanation out of the way, let's continue. Next, we take the number 28,240,025 and divide it by 2:
28,240,025 ÷ 2 = 14,120,012.5
If the quotient is a whole number, then 2 and 14,120,012.5 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 | 28,240,025 | |
| -1 | -28,240,025 |
Now, we try dividing 28,240,025 by 3:
28,240,025 ÷ 3 = 9,413,341.6667
If the quotient is a whole number, then 3 and 9,413,341.6667 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 | 28,240,025 | |
| -1 | -28,240,025 |
Let's try dividing by 4:
28,240,025 ÷ 4 = 7,060,006.25
If the quotient is a whole number, then 4 and 7,060,006.25 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 | 28,240,025 | |
| -1 | 28,240,025 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 25 | 55 | 103 | 275 | 515 | 997 | 1,133 | 2,575 | 4,985 | 5,665 | 10,967 | 24,925 | 28,325 | 54,835 | 102,691 | 274,175 | 513,455 | 1,129,601 | 2,567,275 | 5,648,005 | 28,240,025 |
| -1 | -5 | -11 | -25 | -55 | -103 | -275 | -515 | -997 | -1,133 | -2,575 | -4,985 | -5,665 | -10,967 | -24,925 | -28,325 | -54,835 | -102,691 | -274,175 | -513,455 | -1,129,601 | -2,567,275 | -5,648,005 | -28,240,025 |
Here are some more numbers to try:
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