A:
Positive:
1 x 401404455 x 802808919 x 211265595 x 422531521 x 77045811 x 494952605 x 154094055 x 9899
Negative:
-1 x -40140445-5 x -8028089-19 x -2112655-95 x -422531-521 x -77045-811 x -49495-2605 x -15409-4055 x -9899
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 40,140,445, 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 | 40,140,445 | |
| -1 | -40,140,445 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 40,140,445.
Example:
1 x 40,140,445 = 40,140,445
and
-1 x -40,140,445 = 40,140,445
Notice both answers equal 40,140,445
With that explanation out of the way, let's continue. Next, we take the number 40,140,445 and divide it by 2:
40,140,445 ÷ 2 = 20,070,222.5
If the quotient is a whole number, then 2 and 20,070,222.5 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 | 40,140,445 | |
| -1 | -40,140,445 |
Now, we try dividing 40,140,445 by 3:
40,140,445 ÷ 3 = 13,380,148.3333
If the quotient is a whole number, then 3 and 13,380,148.3333 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 | 40,140,445 | |
| -1 | -40,140,445 |
Let's try dividing by 4:
40,140,445 ÷ 4 = 10,035,111.25
If the quotient is a whole number, then 4 and 10,035,111.25 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 | 40,140,445 | |
| -1 | 40,140,445 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 95 | 521 | 811 | 2,605 | 4,055 | 9,899 | 15,409 | 49,495 | 77,045 | 422,531 | 2,112,655 | 8,028,089 | 40,140,445 |
| -1 | -5 | -19 | -95 | -521 | -811 | -2,605 | -4,055 | -9,899 | -15,409 | -49,495 | -77,045 | -422,531 | -2,112,655 | -8,028,089 | -40,140,445 |
Here are some more numbers to try:
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