Any of its factors which are: 1, 2, 61 and 122
No
no numbers!
Nothing can go evenly into 21 or 17. They are both odd numbers and therefore cannot be evenly divided.
Four: 1 2 61 122.
The numbers that go into 30 are1, 2, 3, 5, 30, 15, 10, 6
60.5
1,2,3,6,7
11,6,1,2,33
n
2,4,7
1,2,4,8,16,32
255