257723280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:318

約数の個数: 240

約数和(自身を含む): 919226880

約数和(自身を除く): 661503600

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 30, 36, 40, 45, 46, 48, 60, 69, 72, 79, 80, 90, 92, 115, 120, 138, 144, 158, 180, 184, 197, 207, 230, 237, 240, 276, 316, 345, 360, 368, 394, 395, 414, 460, 474, 552, 591, 632, 690, 711, 720, 788, 790, 828, 920, 948, 985, 1035, 1104, 1182, 1185, 1264, 1380, 1422, 1576, 1580, 1656, 1773, 1817, 1840, 1896, 1970, 2070, 2364, 2370, 2760, 2844, 2955, 3152, 3160, 3312, 3546, 3555, 3634, 3792, 3940, 4140, 4531, 4728, 4740, 5451, 5520, 5688, 5910, 6320, 7092, 7110, 7268, 7880, 8280, 8865, 9062, 9085, 9456, 9480, 10902, 11376, 11820, 13593, 14184, 14220, 14536, 15563, 15760, 16353, 16560, 17730, 18124, 18170, 18960, 21804, 22655, 23640, 27186, 27255, 28368, 28440, 29072, 31126, 32706, 35460, 36248, 36340, 40779, 43608, 45310, 46689, 47280, 54372, 54510, 56880, 62252, 65412, 67965, 70920, 72496, 72680, 77815, 81558, 81765, 87216, 90620, 93378, 108744, 109020, 124504, 130824, 135930, 140067, 141840, 145360, 155630, 163116, 163530, 181240, 186756, 203895, 217488, 218040, 233445, 249008, 261648, 271860, 280134, 311260, 326232, 327060, 357949, 362480, 373512, 407790, 436080, 466890, 543720, 560268, 622520, 652464, 654120, 700335, 715898, 747024, 815580, 933780, 1073847, 1087440, 1120536, 1245040, 1308240, 1400670, 1431796, 1631160, 1789745, 1867560, 2147694, 2241072, 2801340, 2863592, 3221541, 3262320, 3579490, 3735120, 4295388, 5369235, 5602680, 5727184, 6443082, 7158980, 8590776, 10738470, 11205360, 12886164, 14317960, 16107705, 17181552, 21476940, 25772328, 28635920, 32215410, 42953880, 51544656, 64430820, 85907760, 128861640, 257723280]

約数ペア:

[(1, 257723280), (2, 128861640), (3, 85907760), (4, 64430820), (5, 51544656), (6, 42953880), (8, 32215410), (9, 28635920), (10, 25772328), (12, 21476940), (15, 17181552), (16, 16107705), (18, 14317960), (20, 12886164), (23, 11205360), (24, 10738470), (30, 8590776), (36, 7158980), (40, 6443082), (45, 5727184), (46, 5602680), (48, 5369235), (60, 4295388), (69, 3735120), (72, 3579490), (79, 3262320), (80, 3221541), (90, 2863592), (92, 2801340), (115, 2241072), (120, 2147694), (138, 1867560), (144, 1789745), (158, 1631160), (180, 1431796), (184, 1400670), (197, 1308240), (207, 1245040), (230, 1120536), (237, 1087440), (240, 1073847), (276, 933780), (316, 815580), (345, 747024), (360, 715898), (368, 700335), (394, 654120), (395, 652464), (414, 622520), (460, 560268), (474, 543720), (552, 466890), (591, 436080), (632, 407790), (690, 373512), (711, 362480), (720, 357949), (788, 327060), (790, 326232), (828, 311260), (920, 280134), (948, 271860), (985, 261648), (1035, 249008), (1104, 233445), (1182, 218040), (1185, 217488), (1264, 203895), (1380, 186756), (1422, 181240), (1576, 163530), (1580, 163116), (1656, 155630), (1773, 145360), (1817, 141840), (1840, 140067), (1896, 135930), (1970, 130824), (2070, 124504), (2364, 109020), (2370, 108744), (2760, 93378), (2844, 90620), (2955, 87216), (3152, 81765), (3160, 81558), (3312, 77815), (3546, 72680), (3555, 72496), (3634, 70920), (3792, 67965), (3940, 65412), (4140, 62252), (4531, 56880), (4728, 54510), (4740, 54372), (5451, 47280), (5520, 46689), (5688, 45310), (5910, 43608), (6320, 40779), (7092, 36340), (7110, 36248), (7268, 35460), (7880, 32706), (8280, 31126), (8865, 29072), (9062, 28440), (9085, 28368), (9456, 27255), (9480, 27186), (10902, 23640), (11376, 22655), (11820, 21804), (13593, 18960), (14184, 18170), (14220, 18124), (14536, 17730), (15563, 16560), (15760, 16353)]