15 groups of order 21020.
| SmallGroups | group |
|---|---|
| (21020, 1) | C4×C5×C1051 #35230798 |
| (21020, 2) | Dic1051⋊C5 #35230799 |
| (21020, 3) | C4×C1051⋊C5 #35230800 |
| (21020, 4) | Dic5×C1051 #35230801 |
| (21020, 5) | C5×Dic1051 #35230802 |
| (21020, 6) | Dic5255 #35230803 |
| (21020, 7) | C22×C5×C1051 #35230804 |
| (21020, 8) | C2×D1051⋊C5 #35230805 |
| (21020, 9) | C22×C1051⋊C5 #35230806 |
| (21020, 10) | AGL(1,𝔽5)×C1051 #35230807 |
| (21020, 11) | C1051⋊AGL(1,𝔽5) #35230808 |
| (21020, 12) | D5×D1051 #35230809 |
| (21020, 13) | C2×C5×D1051 #35230810 |
| (21020, 14) | C2×D5×C1051 #35230811 |
| (21020, 15) | C2×D5255 #35230812 |