A:
Positive:
1 x 7277143743 x 169235973 x 99686997 x 750221239 x 3044833139 x 231834171 x 174477081 x 10277
Negative:
-1 x -72771437-43 x -1692359-73 x -996869-97 x -750221-239 x -304483-3139 x -23183-4171 x -17447-7081 x -10277
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 72,771,437, 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 | 72,771,437 | |
| -1 | -72,771,437 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 72,771,437.
Example:
1 x 72,771,437 = 72,771,437
and
-1 x -72,771,437 = 72,771,437
Notice both answers equal 72,771,437
With that explanation out of the way, let's continue. Next, we take the number 72,771,437 and divide it by 2:
72,771,437 ÷ 2 = 36,385,718.5
If the quotient is a whole number, then 2 and 36,385,718.5 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 | 72,771,437 | |
| -1 | -72,771,437 |
Now, we try dividing 72,771,437 by 3:
72,771,437 ÷ 3 = 24,257,145.6667
If the quotient is a whole number, then 3 and 24,257,145.6667 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 | 72,771,437 | |
| -1 | -72,771,437 |
Let's try dividing by 4:
72,771,437 ÷ 4 = 18,192,859.25
If the quotient is a whole number, then 4 and 18,192,859.25 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 | 72,771,437 | |
| -1 | 72,771,437 |
If you did it right, you will end up with this table:
| 1 | 43 | 73 | 97 | 239 | 3,139 | 4,171 | 7,081 | 10,277 | 17,447 | 23,183 | 304,483 | 750,221 | 996,869 | 1,692,359 | 72,771,437 |
| -1 | -43 | -73 | -97 | -239 | -3,139 | -4,171 | -7,081 | -10,277 | -17,447 | -23,183 | -304,483 | -750,221 | -996,869 | -1,692,359 | -72,771,437 |
Here are some more numbers to try:
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