The proper factors of 16 are 1,2,4, and 8 :)
The proper factors of 220 are 2,4,5,10,11,20,22,44,55,110
Prime numbers don't have proper factors.
1, 5, 7, and 35 are the factors of 35. The proper factors are 5 and 7.
13 is a prime number so the only factors are 1 and itself. Prime numbers have no proper factors.
1 2 4 8 16 23 46 47 92 94 184 188 368 376 752 1081 2162 4324 8648 17296
No. Some proper factors are prime.
No, no prime number has proper factors.
One has no proper factors.
1 doesn't have proper factors.
Proper factors do not include one and the number itself.
Prime numbers don't have proper factors.
Prime numbers don't have proper factors.
The proper factors of 22 are 2 and 11.
Prime numbers don't have proper factors.
Prime numbers don't have proper factors.
The proper factors of 26 are 2 and 13