A:
Positive:
1 x 72830202729 x 2511386379 x 9219013107 x 68065612291 x 3178972971 x 2451373103 x 2347098453 x 86159
Negative:
-1 x -728302027-29 x -25113863-79 x -9219013-107 x -6806561-2291 x -317897-2971 x -245137-3103 x -234709-8453 x -86159
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 728,302,027, 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 | 728,302,027 | |
| -1 | -728,302,027 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 728,302,027.
Example:
1 x 728,302,027 = 728,302,027
and
-1 x -728,302,027 = 728,302,027
Notice both answers equal 728,302,027
With that explanation out of the way, let's continue. Next, we take the number 728,302,027 and divide it by 2:
728,302,027 ÷ 2 = 364,151,013.5
If the quotient is a whole number, then 2 and 364,151,013.5 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 | 728,302,027 | |
| -1 | -728,302,027 |
Now, we try dividing 728,302,027 by 3:
728,302,027 ÷ 3 = 242,767,342.3333
If the quotient is a whole number, then 3 and 242,767,342.3333 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 | 728,302,027 | |
| -1 | -728,302,027 |
Let's try dividing by 4:
728,302,027 ÷ 4 = 182,075,506.75
If the quotient is a whole number, then 4 and 182,075,506.75 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 | 728,302,027 | |
| -1 | 728,302,027 |
If you did it right, you will end up with this table:
| 1 | 29 | 79 | 107 | 2,291 | 2,971 | 3,103 | 8,453 | 86,159 | 234,709 | 245,137 | 317,897 | 6,806,561 | 9,219,013 | 25,113,863 | 728,302,027 |
| -1 | -29 | -79 | -107 | -2,291 | -2,971 | -3,103 | -8,453 | -86,159 | -234,709 | -245,137 | -317,897 | -6,806,561 | -9,219,013 | -25,113,863 | -728,302,027 |
Here are some more numbers to try:
Try the factor calculator