68 groups of order 1640.
| SmallGroups | group |
|---|---|
| (1640, 1) | #66491⋊C5 #13109965 |
| (1640, 2) | C8×C41⋊C5 #13109966 |
| (1640, 3) | #168×C41 #13109967 |
| (1640, 4) | C5×#66491 #13109968 |
| (1640, 5) | #13109969 |
| (1640, 6) | C5×C8×C41 #13109970 |
| (1640, 7) | #66493⋊C5 #13109971 |
| (1640, 8) | (C41⋊C5)⋊Q8 #13109972 |
| (1640, 9) | C4×D41⋊C5 #13109973 |
| (1640, 10) | C4⋊(D41⋊C5) #13109974 |
| (1640, 11) | C2×Dic41⋊C5 #13109975 |
| (1640, 12) | C22⋊(D41⋊C5) #13109976 |
| (1640, 13) | C2×C4×C41⋊C5 #13109977 |
| (1640, 14) | D4×C41⋊C5 #13109978 |
| (1640, 15) | Q8×C41⋊C5 #13109979 |
| (1640, 16) | C5×#66493 #13109980 |
| (1640, 17) | #170×C41 #13109981 |
| (1640, 18) | #13109982 |
| (1640, 19) | #13109983 |
| (1640, 20) | #13109984 |
| (1640, 21) | #13109985 |
| (1640, 22) | Dic5×D41 #13109986 |
| (1640, 23) | D5×Dic41 #13109987 |
| (1640, 24) | #13109988 |
| (1640, 25) | #13109989 |
| (1640, 26) | #13109990 |
| (1640, 27) | #13109991 |
| (1640, 28) | #13109992 |
| (1640, 29) | C5×Dic82 #13109993 |
| (1640, 30) | C4×C5×D41 #13109994 |
| (1640, 31) | C5×D164 #13109995 |
| (1640, 32) | C2×C5×Dic41 #13109996 |
| (1640, 33) | C5×C22⋊D41 #13109997 |
| (1640, 34) | Dic10×C41 #13109998 |
| (1640, 35) | C4×D5×C41 #13109999 |
| (1640, 36) | D20×C41 #13110000 |
| (1640, 37) | C2×Dic5×C41 #13110001 |
| (1640, 38) | C22⋊D5×C41 #13110002 |
| (1640, 39) | Dic410 #13110003 |
| (1640, 40) | C4×D205 #13110004 |
| (1640, 41) | D820 #13110005 |
| (1640, 42) | C2×Dic205 #13110006 |
| (1640, 43) | C22⋊D205 #13110007 |
| (1640, 44) | C2×C4×C5×C41 #13110008 |
| (1640, 45) | C5×D4×C41 #13110009 |
| (1640, 46) | C5×Q8×C41 #13110010 |
| (1640, 47) | AGL(1,𝔽41) #13110011 |
| (1640, 48) | C2×#4223⋊C5 #13110012 |
| (1640, 49) | C22×D41⋊C5 #13110013 |
| (1640, 50) | C5×#66502 #13110014 |
| (1640, 51) | #13110015 |
| (1640, 52) | #13110016 |
| (1640, 53) | #13110017 |
| (1640, 54) | D5⋊#4223 #13110018 |
| (1640, 55) | AGL(1,𝔽5)×D41 #13110019 |
| (1640, 56) | D5×#4223 #13110020 |
| (1640, 57) | C23×C41⋊C5 #13110021 |
| (1640, 58) | C2×C5×#4223 #13110022 |
| (1640, 59) | C2×AGL(1,𝔽5)×C41 #13110023 |
| (1640, 60) | C2×#11717961 #13110024 |
| (1640, 61) | C2×#11717962 #13110025 |
| (1640, 62) | C2×#11717963 #13110026 |
| (1640, 63) | C2×#11717964 #13110027 |
| (1640, 64) | C2×D5×D41 #13110028 |
| (1640, 65) | C22×C5×D41 #13110029 |
| (1640, 66) | C22×D5×C41 #13110030 |
| (1640, 67) | C22×D205 #13110031 |
| (1640, 68) | C23×C5×C41 #13110032 |