81439020

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1289}}^1$

素因数の和:1326

約数の個数: 144

約数和(自身を含む): 276101280

約数和(自身を除く): 194662260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 27, 30, 36, 39, 45, 52, 54, 60, 65, 78, 81, 90, 108, 117, 130, 135, 156, 162, 180, 195, 234, 243, 260, 270, 324, 351, 390, 405, 468, 486, 540, 585, 702, 780, 810, 972, 1053, 1170, 1215, 1289, 1404, 1620, 1755, 2106, 2340, 2430, 2578, 3159, 3510, 3867, 4212, 4860, 5156, 5265, 6318, 6445, 7020, 7734, 10530, 11601, 12636, 12890, 15468, 15795, 16757, 19335, 21060, 23202, 25780, 31590, 33514, 34803, 38670, 46404, 50271, 58005, 63180, 67028, 69606, 77340, 83785, 100542, 104409, 116010, 139212, 150813, 167570, 174015, 201084, 208818, 232020, 251355, 301626, 313227, 335140, 348030, 417636, 452439, 502710, 522045, 603252, 626454, 696060, 754065, 904878, 1005420, 1044090, 1252908, 1357317, 1508130, 1566135, 1809756, 2088180, 2262195, 2714634, 3016260, 3132270, 4071951, 4524390, 5429268, 6264540, 6786585, 8143902, 9048780, 13573170, 16287804, 20359755, 27146340, 40719510, 81439020]

約数ペア:

[(1, 81439020), (2, 40719510), (3, 27146340), (4, 20359755), (5, 16287804), (6, 13573170), (9, 9048780), (10, 8143902), (12, 6786585), (13, 6264540), (15, 5429268), (18, 4524390), (20, 4071951), (26, 3132270), (27, 3016260), (30, 2714634), (36, 2262195), (39, 2088180), (45, 1809756), (52, 1566135), (54, 1508130), (60, 1357317), (65, 1252908), (78, 1044090), (81, 1005420), (90, 904878), (108, 754065), (117, 696060), (130, 626454), (135, 603252), (156, 522045), (162, 502710), (180, 452439), (195, 417636), (234, 348030), (243, 335140), (260, 313227), (270, 301626), (324, 251355), (351, 232020), (390, 208818), (405, 201084), (468, 174015), (486, 167570), (540, 150813), (585, 139212), (702, 116010), (780, 104409), (810, 100542), (972, 83785), (1053, 77340), (1170, 69606), (1215, 67028), (1289, 63180), (1404, 58005), (1620, 50271), (1755, 46404), (2106, 38670), (2340, 34803), (2430, 33514), (2578, 31590), (3159, 25780), (3510, 23202), (3867, 21060), (4212, 19335), (4860, 16757), (5156, 15795), (5265, 15468), (6318, 12890), (6445, 12636), (7020, 11601), (7734, 10530)]