A:
Positive:
1 x 40264456111 x 3660405119 x 2119181943 x 9363827121 x 3327641209 x 1926529473 x 851257817 x 4928332299 x 1751394073 x 988575203 x 773878987 x 44803
Negative:
-1 x -402644561-11 x -36604051-19 x -21191819-43 x -9363827-121 x -3327641-209 x -1926529-473 x -851257-817 x -492833-2299 x -175139-4073 x -98857-5203 x -77387-8987 x -44803
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 402,644,561, 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 | 402,644,561 | |
| -1 | -402,644,561 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 402,644,561.
Example:
1 x 402,644,561 = 402,644,561
and
-1 x -402,644,561 = 402,644,561
Notice both answers equal 402,644,561
With that explanation out of the way, let's continue. Next, we take the number 402,644,561 and divide it by 2:
402,644,561 ÷ 2 = 201,322,280.5
If the quotient is a whole number, then 2 and 201,322,280.5 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 | 402,644,561 | |
| -1 | -402,644,561 |
Now, we try dividing 402,644,561 by 3:
402,644,561 ÷ 3 = 134,214,853.6667
If the quotient is a whole number, then 3 and 134,214,853.6667 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 | 402,644,561 | |
| -1 | -402,644,561 |
Let's try dividing by 4:
402,644,561 ÷ 4 = 100,661,140.25
If the quotient is a whole number, then 4 and 100,661,140.25 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 | 402,644,561 | |
| -1 | 402,644,561 |
If you did it right, you will end up with this table:
| 1 | 11 | 19 | 43 | 121 | 209 | 473 | 817 | 2,299 | 4,073 | 5,203 | 8,987 | 44,803 | 77,387 | 98,857 | 175,139 | 492,833 | 851,257 | 1,926,529 | 3,327,641 | 9,363,827 | 21,191,819 | 36,604,051 | 402,644,561 |
| -1 | -11 | -19 | -43 | -121 | -209 | -473 | -817 | -2,299 | -4,073 | -5,203 | -8,987 | -44,803 | -77,387 | -98,857 | -175,139 | -492,833 | -851,257 | -1,926,529 | -3,327,641 | -9,363,827 | -21,191,819 | -36,604,051 | -402,644,561 |
Here are some more numbers to try:
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