A:
Positive:
1 x 727834255 x 1455668511 x 661667513 x 559872525 x 291133755 x 132333565 x 1119745143 x 508975275 x 264667325 x 223949715 x 1017953575 x 20359
Negative:
-1 x -72783425-5 x -14556685-11 x -6616675-13 x -5598725-25 x -2911337-55 x -1323335-65 x -1119745-143 x -508975-275 x -264667-325 x -223949-715 x -101795-3575 x -20359
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 72,783,425, 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 | 72,783,425 | |
| -1 | -72,783,425 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 72,783,425.
Example:
1 x 72,783,425 = 72,783,425
and
-1 x -72,783,425 = 72,783,425
Notice both answers equal 72,783,425
With that explanation out of the way, let's continue. Next, we take the number 72,783,425 and divide it by 2:
72,783,425 ÷ 2 = 36,391,712.5
If the quotient is a whole number, then 2 and 36,391,712.5 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 | 72,783,425 | |
| -1 | -72,783,425 |
Now, we try dividing 72,783,425 by 3:
72,783,425 ÷ 3 = 24,261,141.6667
If the quotient is a whole number, then 3 and 24,261,141.6667 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 | 72,783,425 | |
| -1 | -72,783,425 |
Let's try dividing by 4:
72,783,425 ÷ 4 = 18,195,856.25
If the quotient is a whole number, then 4 and 18,195,856.25 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 | 72,783,425 | |
| -1 | 72,783,425 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 13 | 25 | 55 | 65 | 143 | 275 | 325 | 715 | 3,575 | 20,359 | 101,795 | 223,949 | 264,667 | 508,975 | 1,119,745 | 1,323,335 | 2,911,337 | 5,598,725 | 6,616,675 | 14,556,685 | 72,783,425 |
| -1 | -5 | -11 | -13 | -25 | -55 | -65 | -143 | -275 | -325 | -715 | -3,575 | -20,359 | -101,795 | -223,949 | -264,667 | -508,975 | -1,119,745 | -1,323,335 | -2,911,337 | -5,598,725 | -6,616,675 | -14,556,685 | -72,783,425 |
Here are some more numbers to try:
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