A:
Positive:
1 x 726734477 x 1038192111 x 660667777 x 943811121 x 600607239 x 304073359 x 202433847 x 858011673 x 434392513 x 289192629 x 276433949 x 18403
Negative:
-1 x -72673447-7 x -10381921-11 x -6606677-77 x -943811-121 x -600607-239 x -304073-359 x -202433-847 x -85801-1673 x -43439-2513 x -28919-2629 x -27643-3949 x -18403
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 72,673,447, 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 | 72,673,447 | |
| -1 | -72,673,447 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 72,673,447.
Example:
1 x 72,673,447 = 72,673,447
and
-1 x -72,673,447 = 72,673,447
Notice both answers equal 72,673,447
With that explanation out of the way, let's continue. Next, we take the number 72,673,447 and divide it by 2:
72,673,447 ÷ 2 = 36,336,723.5
If the quotient is a whole number, then 2 and 36,336,723.5 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 | 72,673,447 | |
| -1 | -72,673,447 |
Now, we try dividing 72,673,447 by 3:
72,673,447 ÷ 3 = 24,224,482.3333
If the quotient is a whole number, then 3 and 24,224,482.3333 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 | 72,673,447 | |
| -1 | -72,673,447 |
Let's try dividing by 4:
72,673,447 ÷ 4 = 18,168,361.75
If the quotient is a whole number, then 4 and 18,168,361.75 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 | 72,673,447 | |
| -1 | 72,673,447 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 121 | 239 | 359 | 847 | 1,673 | 2,513 | 2,629 | 3,949 | 18,403 | 27,643 | 28,919 | 43,439 | 85,801 | 202,433 | 304,073 | 600,607 | 943,811 | 6,606,677 | 10,381,921 | 72,673,447 |
| -1 | -7 | -11 | -77 | -121 | -239 | -359 | -847 | -1,673 | -2,513 | -2,629 | -3,949 | -18,403 | -27,643 | -28,919 | -43,439 | -85,801 | -202,433 | -304,073 | -600,607 | -943,811 | -6,606,677 | -10,381,921 | -72,673,447 |
Here are some more numbers to try:
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