81391648

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{677}}^1$

素因数の和:734

約数の個数: 72

約数和(自身を含む): 183584772

約数和(自身を除く): 102193124

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 68, 104, 136, 208, 221, 272, 289, 416, 442, 544, 578, 677, 884, 1156, 1354, 1768, 2312, 2708, 3536, 3757, 4624, 5416, 7072, 7514, 8801, 9248, 10832, 11509, 15028, 17602, 21664, 23018, 30056, 35204, 46036, 60112, 70408, 92072, 120224, 140816, 149617, 184144, 195653, 281632, 299234, 368288, 391306, 598468, 782612, 1196936, 1565224, 2393872, 2543489, 3130448, 4787744, 5086978, 6260896, 10173956, 20347912, 40695824, 81391648]

約数ペア:

[(1, 81391648), (2, 40695824), (4, 20347912), (8, 10173956), (13, 6260896), (16, 5086978), (17, 4787744), (26, 3130448), (32, 2543489), (34, 2393872), (52, 1565224), (68, 1196936), (104, 782612), (136, 598468), (208, 391306), (221, 368288), (272, 299234), (289, 281632), (416, 195653), (442, 184144), (544, 149617), (578, 140816), (677, 120224), (884, 92072), (1156, 70408), (1354, 60112), (1768, 46036), (2312, 35204), (2708, 30056), (3536, 23018), (3757, 21664), (4624, 17602), (5416, 15028), (7072, 11509), (7514, 10832), (8801, 9248)]