A:
Positive:
1 x 7257653055 x 14515306147 x 1544181553 x 13693685235 x 3088363265 x 27387372491 x 29135512455 x 58271
Negative:
-1 x -725765305-5 x -145153061-47 x -15441815-53 x -13693685-235 x -3088363-265 x -2738737-2491 x -291355-12455 x -58271
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 725,765,305, 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 | 725,765,305 | |
| -1 | -725,765,305 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 725,765,305.
Example:
1 x 725,765,305 = 725,765,305
and
-1 x -725,765,305 = 725,765,305
Notice both answers equal 725,765,305
With that explanation out of the way, let's continue. Next, we take the number 725,765,305 and divide it by 2:
725,765,305 ÷ 2 = 362,882,652.5
If the quotient is a whole number, then 2 and 362,882,652.5 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 | 725,765,305 | |
| -1 | -725,765,305 |
Now, we try dividing 725,765,305 by 3:
725,765,305 ÷ 3 = 241,921,768.3333
If the quotient is a whole number, then 3 and 241,921,768.3333 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 | 725,765,305 | |
| -1 | -725,765,305 |
Let's try dividing by 4:
725,765,305 ÷ 4 = 181,441,326.25
If the quotient is a whole number, then 4 and 181,441,326.25 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 | 725,765,305 | |
| -1 | 725,765,305 |
If you did it right, you will end up with this table:
| 1 | 5 | 47 | 53 | 235 | 265 | 2,491 | 12,455 | 58,271 | 291,355 | 2,738,737 | 3,088,363 | 13,693,685 | 15,441,815 | 145,153,061 | 725,765,305 |
| -1 | -5 | -47 | -53 | -235 | -265 | -2,491 | -12,455 | -58,271 | -291,355 | -2,738,737 | -3,088,363 | -13,693,685 | -15,441,815 | -145,153,061 | -725,765,305 |
Here are some more numbers to try:
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