20188792

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{601}}^1$

素因数の和:656

約数の個数: 64

約数和(自身を含む): 45511200

約数和(自身を除く): 25322408

約数列:

[1, 2, 4, 8, 13, 17, 19, 26, 34, 38, 52, 68, 76, 104, 136, 152, 221, 247, 323, 442, 494, 601, 646, 884, 988, 1202, 1292, 1768, 1976, 2404, 2584, 4199, 4808, 7813, 8398, 10217, 11419, 15626, 16796, 20434, 22838, 31252, 33592, 40868, 45676, 62504, 81736, 91352, 132821, 148447, 194123, 265642, 296894, 388246, 531284, 593788, 776492, 1062568, 1187576, 1552984, 2523599, 5047198, 10094396, 20188792]

約数ペア:

[(1, 20188792), (2, 10094396), (4, 5047198), (8, 2523599), (13, 1552984), (17, 1187576), (19, 1062568), (26, 776492), (34, 593788), (38, 531284), (52, 388246), (68, 296894), (76, 265642), (104, 194123), (136, 148447), (152, 132821), (221, 91352), (247, 81736), (323, 62504), (442, 45676), (494, 40868), (601, 33592), (646, 31252), (884, 22838), (988, 20434), (1202, 16796), (1292, 15626), (1768, 11419), (1976, 10217), (2404, 8398), (2584, 7813), (4199, 4808)]