A:
Positive:
1 x 726104155 x 1452208359 x 1230685101 x 718915295 x 246137505 x 1437832437 x 297955959 x 12185
Negative:
-1 x -72610415-5 x -14522083-59 x -1230685-101 x -718915-295 x -246137-505 x -143783-2437 x -29795-5959 x -12185
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 72,610,415, 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 | 72,610,415 | |
| -1 | -72,610,415 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 72,610,415.
Example:
1 x 72,610,415 = 72,610,415
and
-1 x -72,610,415 = 72,610,415
Notice both answers equal 72,610,415
With that explanation out of the way, let's continue. Next, we take the number 72,610,415 and divide it by 2:
72,610,415 ÷ 2 = 36,305,207.5
If the quotient is a whole number, then 2 and 36,305,207.5 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 | 72,610,415 | |
| -1 | -72,610,415 |
Now, we try dividing 72,610,415 by 3:
72,610,415 ÷ 3 = 24,203,471.6667
If the quotient is a whole number, then 3 and 24,203,471.6667 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 | 72,610,415 | |
| -1 | -72,610,415 |
Let's try dividing by 4:
72,610,415 ÷ 4 = 18,152,603.75
If the quotient is a whole number, then 4 and 18,152,603.75 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 | 72,610,415 | |
| -1 | 72,610,415 |
If you did it right, you will end up with this table:
| 1 | 5 | 59 | 101 | 295 | 505 | 2,437 | 5,959 | 12,185 | 29,795 | 143,783 | 246,137 | 718,915 | 1,230,685 | 14,522,083 | 72,610,415 |
| -1 | -5 | -59 | -101 | -295 | -505 | -2,437 | -5,959 | -12,185 | -29,795 | -143,783 | -246,137 | -718,915 | -1,230,685 | -14,522,083 | -72,610,415 |
Here are some more numbers to try:
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