81480720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{509}}^1$

素因数の和:577

約数の個数: 160

約数和(自身を含む): 273196800

約数和(自身を除く): 191716080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 29, 30, 40, 46, 48, 58, 60, 69, 80, 87, 92, 115, 116, 120, 138, 145, 174, 184, 230, 232, 240, 276, 290, 345, 348, 368, 435, 460, 464, 509, 552, 580, 667, 690, 696, 870, 920, 1018, 1104, 1160, 1334, 1380, 1392, 1527, 1740, 1840, 2001, 2036, 2320, 2545, 2668, 2760, 3054, 3335, 3480, 4002, 4072, 5090, 5336, 5520, 6108, 6670, 6960, 7635, 8004, 8144, 10005, 10180, 10672, 11707, 12216, 13340, 14761, 15270, 16008, 20010, 20360, 23414, 24432, 26680, 29522, 30540, 32016, 35121, 40020, 40720, 44283, 46828, 53360, 58535, 59044, 61080, 70242, 73805, 80040, 88566, 93656, 117070, 118088, 122160, 140484, 147610, 160080, 175605, 177132, 187312, 221415, 234140, 236176, 280968, 295220, 339503, 351210, 354264, 442830, 468280, 561936, 590440, 679006, 702420, 708528, 885660, 936560, 1018509, 1180880, 1358012, 1404840, 1697515, 1771320, 2037018, 2716024, 2809680, 3395030, 3542640, 4074036, 5092545, 5432048, 6790060, 8148072, 10185090, 13580120, 16296144, 20370180, 27160240, 40740360, 81480720]

約数ペア:

[(1, 81480720), (2, 40740360), (3, 27160240), (4, 20370180), (5, 16296144), (6, 13580120), (8, 10185090), (10, 8148072), (12, 6790060), (15, 5432048), (16, 5092545), (20, 4074036), (23, 3542640), (24, 3395030), (29, 2809680), (30, 2716024), (40, 2037018), (46, 1771320), (48, 1697515), (58, 1404840), (60, 1358012), (69, 1180880), (80, 1018509), (87, 936560), (92, 885660), (115, 708528), (116, 702420), (120, 679006), (138, 590440), (145, 561936), (174, 468280), (184, 442830), (230, 354264), (232, 351210), (240, 339503), (276, 295220), (290, 280968), (345, 236176), (348, 234140), (368, 221415), (435, 187312), (460, 177132), (464, 175605), (509, 160080), (552, 147610), (580, 140484), (667, 122160), (690, 118088), (696, 117070), (870, 93656), (920, 88566), (1018, 80040), (1104, 73805), (1160, 70242), (1334, 61080), (1380, 59044), (1392, 58535), (1527, 53360), (1740, 46828), (1840, 44283), (2001, 40720), (2036, 40020), (2320, 35121), (2545, 32016), (2668, 30540), (2760, 29522), (3054, 26680), (3335, 24432), (3480, 23414), (4002, 20360), (4072, 20010), (5090, 16008), (5336, 15270), (5520, 14761), (6108, 13340), (6670, 12216), (6960, 11707), (7635, 10672), (8004, 10180), (8144, 10005)]