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#!/opt/local/bin/python
#
# See ../README.md
#
#
# Run as: python ch-1.py [plain | compute]
#
import sys
COUNT = 20
PLAIN = 0
COMPUTE = 1
def divisor_sum (n):
sum = 0
for i in range (2, n / 2 + 1):
if n % i == 0:
sum = sum + i
return (sum)
type = PLAIN
if len (sys . argv) > 1 and sys . argv [1] == "compute":
type = COMPUTE
if type == PLAIN:
print ("0, 0, 0, 2, 0, 5, 0, 6, 3, 7, 0, 15, 0, 9, 8, 14, 0, 20, 0, 21")
if type == COMPUTE:
for n in range (1, COUNT + 1):
if n > 1:
print (", ", end = '')
print (divisor_sum (n), end = '')
print ("")
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