The attack on Friday was one the deadliest against the military in a jihadist insurgency that has killed hundreds of policemen and soldiers in the past four years.
Police and provincial officials said 21 bodies had arrived in the mainland for funerals in 11 provinces.
The jihadists attacked several checkpoints with car bombs and heavy gunfire in a coordinated assault, for which IS later claimed responsibility in a statement.
The military said it killed 40 of the assailants.
More From This Section
Groups other than IS have also carried out attacks targeting policemen and judges.
Gunmen on Friday shot dead a National Security Service officer as he was leaving his home north of Cairo.
The militant group Hasam claimed responsibility.