A:
Positive:
1 x 400413797 x 572019719 x 210744141 x 97661949 x 817171133 x 301063287 x 139517779 x 51401931 x 430091049 x 381712009 x 199315453 x 7343
Negative:
-1 x -40041379-7 x -5720197-19 x -2107441-41 x -976619-49 x -817171-133 x -301063-287 x -139517-779 x -51401-931 x -43009-1049 x -38171-2009 x -19931-5453 x -7343
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 40,041,379, 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 | 40,041,379 | |
| -1 | -40,041,379 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 40,041,379.
Example:
1 x 40,041,379 = 40,041,379
and
-1 x -40,041,379 = 40,041,379
Notice both answers equal 40,041,379
With that explanation out of the way, let's continue. Next, we take the number 40,041,379 and divide it by 2:
40,041,379 ÷ 2 = 20,020,689.5
If the quotient is a whole number, then 2 and 20,020,689.5 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 | 40,041,379 | |
| -1 | -40,041,379 |
Now, we try dividing 40,041,379 by 3:
40,041,379 ÷ 3 = 13,347,126.3333
If the quotient is a whole number, then 3 and 13,347,126.3333 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 | 40,041,379 | |
| -1 | -40,041,379 |
Let's try dividing by 4:
40,041,379 ÷ 4 = 10,010,344.75
If the quotient is a whole number, then 4 and 10,010,344.75 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 | 40,041,379 | |
| -1 | 40,041,379 |
If you did it right, you will end up with this table:
| 1 | 7 | 19 | 41 | 49 | 133 | 287 | 779 | 931 | 1,049 | 2,009 | 5,453 | 7,343 | 19,931 | 38,171 | 43,009 | 51,401 | 139,517 | 301,063 | 817,171 | 976,619 | 2,107,441 | 5,720,197 | 40,041,379 |
| -1 | -7 | -19 | -41 | -49 | -133 | -287 | -779 | -931 | -1,049 | -2,009 | -5,453 | -7,343 | -19,931 | -38,171 | -43,009 | -51,401 | -139,517 | -301,063 | -817,171 | -976,619 | -2,107,441 | -5,720,197 | -40,041,379 |
Here are some more numbers to try:
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