A:
Positive:
1 x 401303455 x 802606929 x 1383805103 x 389615145 x 276761515 x 779232687 x 149352987 x 13435
Negative:
-1 x -40130345-5 x -8026069-29 x -1383805-103 x -389615-145 x -276761-515 x -77923-2687 x -14935-2987 x -13435
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 40,130,345, 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 | 40,130,345 | |
| -1 | -40,130,345 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 40,130,345.
Example:
1 x 40,130,345 = 40,130,345
and
-1 x -40,130,345 = 40,130,345
Notice both answers equal 40,130,345
With that explanation out of the way, let's continue. Next, we take the number 40,130,345 and divide it by 2:
40,130,345 ÷ 2 = 20,065,172.5
If the quotient is a whole number, then 2 and 20,065,172.5 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 | 40,130,345 | |
| -1 | -40,130,345 |
Now, we try dividing 40,130,345 by 3:
40,130,345 ÷ 3 = 13,376,781.6667
If the quotient is a whole number, then 3 and 13,376,781.6667 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 | 40,130,345 | |
| -1 | -40,130,345 |
Let's try dividing by 4:
40,130,345 ÷ 4 = 10,032,586.25
If the quotient is a whole number, then 4 and 10,032,586.25 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 | 40,130,345 | |
| -1 | 40,130,345 |
If you did it right, you will end up with this table:
| 1 | 5 | 29 | 103 | 145 | 515 | 2,687 | 2,987 | 13,435 | 14,935 | 77,923 | 276,761 | 389,615 | 1,383,805 | 8,026,069 | 40,130,345 |
| -1 | -5 | -29 | -103 | -145 | -515 | -2,687 | -2,987 | -13,435 | -14,935 | -77,923 | -276,761 | -389,615 | -1,383,805 | -8,026,069 | -40,130,345 |
Here are some more numbers to try:
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