81080520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{1013}}^1$

素因数の和:1079

約数の個数: 128

約数和(自身を含む): 262828800

約数和(自身を除く): 181748280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 29, 30, 40, 46, 58, 60, 69, 87, 92, 115, 116, 120, 138, 145, 174, 184, 230, 232, 276, 290, 345, 348, 435, 460, 552, 580, 667, 690, 696, 870, 920, 1013, 1160, 1334, 1380, 1740, 2001, 2026, 2668, 2760, 3039, 3335, 3480, 4002, 4052, 5065, 5336, 6078, 6670, 8004, 8104, 10005, 10130, 12156, 13340, 15195, 16008, 20010, 20260, 23299, 24312, 26680, 29377, 30390, 40020, 40520, 46598, 58754, 60780, 69897, 80040, 88131, 93196, 116495, 117508, 121560, 139794, 146885, 176262, 186392, 232990, 235016, 279588, 293770, 349485, 352524, 440655, 465980, 559176, 587540, 675671, 698970, 705048, 881310, 931960, 1175080, 1351342, 1397940, 1762620, 2027013, 2702684, 2795880, 3378355, 3525240, 4054026, 5405368, 6756710, 8108052, 10135065, 13513420, 16216104, 20270130, 27026840, 40540260, 81080520]

約数ペア:

[(1, 81080520), (2, 40540260), (3, 27026840), (4, 20270130), (5, 16216104), (6, 13513420), (8, 10135065), (10, 8108052), (12, 6756710), (15, 5405368), (20, 4054026), (23, 3525240), (24, 3378355), (29, 2795880), (30, 2702684), (40, 2027013), (46, 1762620), (58, 1397940), (60, 1351342), (69, 1175080), (87, 931960), (92, 881310), (115, 705048), (116, 698970), (120, 675671), (138, 587540), (145, 559176), (174, 465980), (184, 440655), (230, 352524), (232, 349485), (276, 293770), (290, 279588), (345, 235016), (348, 232990), (435, 186392), (460, 176262), (552, 146885), (580, 139794), (667, 121560), (690, 117508), (696, 116495), (870, 93196), (920, 88131), (1013, 80040), (1160, 69897), (1334, 60780), (1380, 58754), (1740, 46598), (2001, 40520), (2026, 40020), (2668, 30390), (2760, 29377), (3039, 26680), (3335, 24312), (3480, 23299), (4002, 20260), (4052, 20010), (5065, 16008), (5336, 15195), (6078, 13340), (6670, 12156), (8004, 10130), (8104, 10005)]