A:
Positive:
1 x 715388177 x 1021983153 x 1349789151 x 473767371 x 1928271057 x 676811277 x 560218003 x 8939
Negative:
-1 x -71538817-7 x -10219831-53 x -1349789-151 x -473767-371 x -192827-1057 x -67681-1277 x -56021-8003 x -8939
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 71,538,817, 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 | 71,538,817 | |
| -1 | -71,538,817 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 71,538,817.
Example:
1 x 71,538,817 = 71,538,817
and
-1 x -71,538,817 = 71,538,817
Notice both answers equal 71,538,817
With that explanation out of the way, let's continue. Next, we take the number 71,538,817 and divide it by 2:
71,538,817 ÷ 2 = 35,769,408.5
If the quotient is a whole number, then 2 and 35,769,408.5 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 | 71,538,817 | |
| -1 | -71,538,817 |
Now, we try dividing 71,538,817 by 3:
71,538,817 ÷ 3 = 23,846,272.3333
If the quotient is a whole number, then 3 and 23,846,272.3333 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 | 71,538,817 | |
| -1 | -71,538,817 |
Let's try dividing by 4:
71,538,817 ÷ 4 = 17,884,704.25
If the quotient is a whole number, then 4 and 17,884,704.25 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 | 71,538,817 | |
| -1 | 71,538,817 |
If you did it right, you will end up with this table:
| 1 | 7 | 53 | 151 | 371 | 1,057 | 1,277 | 8,003 | 8,939 | 56,021 | 67,681 | 192,827 | 473,767 | 1,349,789 | 10,219,831 | 71,538,817 |
| -1 | -7 | -53 | -151 | -371 | -1,057 | -1,277 | -8,003 | -8,939 | -56,021 | -67,681 | -192,827 | -473,767 | -1,349,789 | -10,219,831 | -71,538,817 |
Here are some more numbers to try:
Try the factor calculator