A:
Positive:
1 x 716152437 x 1023074953 x 1351231137 x 522739371 x 193033959 x 746771409 x 508277261 x 9863
Negative:
-1 x -71615243-7 x -10230749-53 x -1351231-137 x -522739-371 x -193033-959 x -74677-1409 x -50827-7261 x -9863
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 71,615,243, 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 | 71,615,243 | |
| -1 | -71,615,243 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 71,615,243.
Example:
1 x 71,615,243 = 71,615,243
and
-1 x -71,615,243 = 71,615,243
Notice both answers equal 71,615,243
With that explanation out of the way, let's continue. Next, we take the number 71,615,243 and divide it by 2:
71,615,243 ÷ 2 = 35,807,621.5
If the quotient is a whole number, then 2 and 35,807,621.5 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 | 71,615,243 | |
| -1 | -71,615,243 |
Now, we try dividing 71,615,243 by 3:
71,615,243 ÷ 3 = 23,871,747.6667
If the quotient is a whole number, then 3 and 23,871,747.6667 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 | 71,615,243 | |
| -1 | -71,615,243 |
Let's try dividing by 4:
71,615,243 ÷ 4 = 17,903,810.75
If the quotient is a whole number, then 4 and 17,903,810.75 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 | 71,615,243 | |
| -1 | 71,615,243 |
If you did it right, you will end up with this table:
| 1 | 7 | 53 | 137 | 371 | 959 | 1,409 | 7,261 | 9,863 | 50,827 | 74,677 | 193,033 | 522,739 | 1,351,231 | 10,230,749 | 71,615,243 |
| -1 | -7 | -53 | -137 | -371 | -959 | -1,409 | -7,261 | -9,863 | -50,827 | -74,677 | -193,033 | -522,739 | -1,351,231 | -10,230,749 | -71,615,243 |
Here are some more numbers to try:
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