A:
Positive:
1 x 7270766923 x 316120329 x 250716161 x 1191929667 x 1090071403 x 518231769 x 411011787 x 40687
Negative:
-1 x -72707669-23 x -3161203-29 x -2507161-61 x -1191929-667 x -109007-1403 x -51823-1769 x -41101-1787 x -40687
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 72,707,669, 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 | 72,707,669 | |
| -1 | -72,707,669 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 72,707,669.
Example:
1 x 72,707,669 = 72,707,669
and
-1 x -72,707,669 = 72,707,669
Notice both answers equal 72,707,669
With that explanation out of the way, let's continue. Next, we take the number 72,707,669 and divide it by 2:
72,707,669 ÷ 2 = 36,353,834.5
If the quotient is a whole number, then 2 and 36,353,834.5 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 | 72,707,669 | |
| -1 | -72,707,669 |
Now, we try dividing 72,707,669 by 3:
72,707,669 ÷ 3 = 24,235,889.6667
If the quotient is a whole number, then 3 and 24,235,889.6667 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 | 72,707,669 | |
| -1 | -72,707,669 |
Let's try dividing by 4:
72,707,669 ÷ 4 = 18,176,917.25
If the quotient is a whole number, then 4 and 18,176,917.25 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 | 72,707,669 | |
| -1 | 72,707,669 |
If you did it right, you will end up with this table:
| 1 | 23 | 29 | 61 | 667 | 1,403 | 1,769 | 1,787 | 40,687 | 41,101 | 51,823 | 109,007 | 1,191,929 | 2,507,161 | 3,161,203 | 72,707,669 |
| -1 | -23 | -29 | -61 | -667 | -1,403 | -1,769 | -1,787 | -40,687 | -41,101 | -51,823 | -109,007 | -1,191,929 | -2,507,161 | -3,161,203 | -72,707,669 |
Here are some more numbers to try:
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