81531090

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{691}}^1$

素因数の和:749

約数の個数: 128

約数和(自身を含む): 239155200

約数和(自身を除く): 157624110

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 23, 27, 30, 38, 45, 46, 54, 57, 69, 90, 95, 114, 115, 135, 138, 171, 190, 207, 230, 270, 285, 342, 345, 414, 437, 513, 570, 621, 690, 691, 855, 874, 1026, 1035, 1242, 1311, 1382, 1710, 2070, 2073, 2185, 2565, 2622, 3105, 3455, 3933, 4146, 4370, 5130, 6210, 6219, 6555, 6910, 7866, 10365, 11799, 12438, 13110, 13129, 15893, 18657, 19665, 20730, 23598, 26258, 31095, 31786, 37314, 39330, 39387, 47679, 58995, 62190, 65645, 78774, 79465, 93285, 95358, 117990, 118161, 131290, 143037, 158930, 186570, 196935, 236322, 238395, 286074, 301967, 354483, 393870, 429111, 476790, 590805, 603934, 708966, 715185, 858222, 905901, 1181610, 1430370, 1509835, 1772415, 1811802, 2145555, 2717703, 3019670, 3544830, 4291110, 4529505, 5435406, 8153109, 9059010, 13588515, 16306218, 27177030, 40765545, 81531090]

約数ペア:

[(1, 81531090), (2, 40765545), (3, 27177030), (5, 16306218), (6, 13588515), (9, 9059010), (10, 8153109), (15, 5435406), (18, 4529505), (19, 4291110), (23, 3544830), (27, 3019670), (30, 2717703), (38, 2145555), (45, 1811802), (46, 1772415), (54, 1509835), (57, 1430370), (69, 1181610), (90, 905901), (95, 858222), (114, 715185), (115, 708966), (135, 603934), (138, 590805), (171, 476790), (190, 429111), (207, 393870), (230, 354483), (270, 301967), (285, 286074), (342, 238395), (345, 236322), (414, 196935), (437, 186570), (513, 158930), (570, 143037), (621, 131290), (690, 118161), (691, 117990), (855, 95358), (874, 93285), (1026, 79465), (1035, 78774), (1242, 65645), (1311, 62190), (1382, 58995), (1710, 47679), (2070, 39387), (2073, 39330), (2185, 37314), (2565, 31786), (2622, 31095), (3105, 26258), (3455, 23598), (3933, 20730), (4146, 19665), (4370, 18657), (5130, 15893), (6210, 13129), (6219, 13110), (6555, 12438), (6910, 11799), (7866, 10365)]