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Untouchable number
positive integer unexpressable as the sum of all proper divisors of any other integer
65536
336
306
372
1128
1944
1960
1962
836
1920
1922
1958
1972
1002
1986
624
726
804
1134
1060
1068
1028
1044
1074
1046
1078
2010
448
246
276
322
474
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