16 groups of order 20439.
| SmallGroups | group |
|---|---|
| (20439, 1) | C27×C757 #35205475 |
| (20439, 2) | C3×C9×C757 #35205476 |
| (20439, 3) | H(3,𝔽3)×C757 #35205477 |
| (20439, 4) | 3−1+2×C757 #35205478 |
| (20439, 5) | C33×C757 #35205479 |
| (20439, 6) | #35205480 |
| (20439, 7) | C9×C757⋊C3 #35205481 |
| (20439, 8) | C3×#20291840 #35205482 |
| (20439, 9) | C32⋊(C757⋊C3) #35205483 |
| (20439, 10) | #35205484 |
| (20439, 11) | #35205485 |
| (20439, 12) | #35205486 |
| (20439, 13) | C32×C757⋊C3 #35205487 |
| (20439, 14) | #35205488 |
| (20439, 15) | C3×#20291842 #35205489 |
| (20439, 16) | #35205490 |