A:
Positive:
1 x 4015781913 x 308906341 x 97945959 x 680641533 x 75343767 x 523571277 x 314472419 x 16601
Negative:
-1 x -40157819-13 x -3089063-41 x -979459-59 x -680641-533 x -75343-767 x -52357-1277 x -31447-2419 x -16601
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 40,157,819, 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 | 40,157,819 | |
| -1 | -40,157,819 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 40,157,819.
Example:
1 x 40,157,819 = 40,157,819
and
-1 x -40,157,819 = 40,157,819
Notice both answers equal 40,157,819
With that explanation out of the way, let's continue. Next, we take the number 40,157,819 and divide it by 2:
40,157,819 ÷ 2 = 20,078,909.5
If the quotient is a whole number, then 2 and 20,078,909.5 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 | 40,157,819 | |
| -1 | -40,157,819 |
Now, we try dividing 40,157,819 by 3:
40,157,819 ÷ 3 = 13,385,939.6667
If the quotient is a whole number, then 3 and 13,385,939.6667 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 | 40,157,819 | |
| -1 | -40,157,819 |
Let's try dividing by 4:
40,157,819 ÷ 4 = 10,039,454.75
If the quotient is a whole number, then 4 and 10,039,454.75 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 | 40,157,819 | |
| -1 | 40,157,819 |
If you did it right, you will end up with this table:
| 1 | 13 | 41 | 59 | 533 | 767 | 1,277 | 2,419 | 16,601 | 31,447 | 52,357 | 75,343 | 680,641 | 979,459 | 3,089,063 | 40,157,819 |
| -1 | -13 | -41 | -59 | -533 | -767 | -1,277 | -2,419 | -16,601 | -31,447 | -52,357 | -75,343 | -680,641 | -979,459 | -3,089,063 | -40,157,819 |
Here are some more numbers to try:
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