A:
Positive:
1 x 3566404155 x 7132808323 x 15506105115 x 3101221157 x 2271595785 x 4543193611 x 9876518055 x 19753
Negative:
-1 x -356640415-5 x -71328083-23 x -15506105-115 x -3101221-157 x -2271595-785 x -454319-3611 x -98765-18055 x -19753
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 356,640,415, 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 | 356,640,415 | |
| -1 | -356,640,415 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 356,640,415.
Example:
1 x 356,640,415 = 356,640,415
and
-1 x -356,640,415 = 356,640,415
Notice both answers equal 356,640,415
With that explanation out of the way, let's continue. Next, we take the number 356,640,415 and divide it by 2:
356,640,415 ÷ 2 = 178,320,207.5
If the quotient is a whole number, then 2 and 178,320,207.5 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 | 356,640,415 | |
| -1 | -356,640,415 |
Now, we try dividing 356,640,415 by 3:
356,640,415 ÷ 3 = 118,880,138.3333
If the quotient is a whole number, then 3 and 118,880,138.3333 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 | 356,640,415 | |
| -1 | -356,640,415 |
Let's try dividing by 4:
356,640,415 ÷ 4 = 89,160,103.75
If the quotient is a whole number, then 4 and 89,160,103.75 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 | 356,640,415 | |
| -1 | 356,640,415 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 115 | 157 | 785 | 3,611 | 18,055 | 19,753 | 98,765 | 454,319 | 2,271,595 | 3,101,221 | 15,506,105 | 71,328,083 | 356,640,415 |
| -1 | -5 | -23 | -115 | -157 | -785 | -3,611 | -18,055 | -19,753 | -98,765 | -454,319 | -2,271,595 | -3,101,221 | -15,506,105 | -71,328,083 | -356,640,415 |
Here are some more numbers to try:
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