23 groups of order 19964.
| SmallGroups | group |
|---|---|
| (19964, 1) | C4×C7×C23×C31 #34093180 |
| (19964, 2) | C7×C23×Dic31 #34093181 |
| (19964, 3) | C7×C31×Dic23 #34093182 |
| (19964, 4) | C7×Dic713 #34093183 |
| (19964, 5) | C23×Dic7×C31 #34093184 |
| (19964, 6) | C23×Dic217 #34093185 |
| (19964, 7) | C31×Dic161 #34093186 |
| (19964, 8) | Dic4991 #34093187 |
| (19964, 9) | C22×C7×C23×C31 #34093188 |
| (19964, 10) | C7×D23×D31 #34093189 |
| (19964, 11) | D7×C23×D31 #34093190 |
| (19964, 12) | D31×D161 #34093191 |
| (19964, 13) | D7×C31×D23 #34093192 |
| (19964, 14) | D23×D217 #34093193 |
| (19964, 15) | D7×D713 #34093194 |
| (19964, 16) | D161⋊D31 #34093195 |
| (19964, 17) | C2×D4991 #34093196 |
| (19964, 18) | C2×C31×D161 #34093197 |
| (19964, 19) | C2×C23×D217 #34093198 |
| (19964, 20) | C2×D7×C23×C31 #34093199 |
| (19964, 21) | C2×C7×D713 #34093200 |
| (19964, 22) | C2×C7×C31×D23 #34093201 |
| (19964, 23) | C2×C7×C23×D31 #34093202 |