640165440

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{367}}^1$

素因数の和:489

約数の個数: 224

約数和(自身を含む): 2153594880

約数和(自身を除く): 1513429440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 32, 40, 46, 48, 60, 64, 69, 79, 80, 92, 96, 115, 120, 138, 158, 160, 184, 192, 230, 237, 240, 276, 316, 320, 345, 367, 368, 395, 460, 474, 480, 552, 632, 690, 734, 736, 790, 920, 948, 960, 1101, 1104, 1185, 1264, 1380, 1468, 1472, 1580, 1817, 1835, 1840, 1896, 2202, 2208, 2370, 2528, 2760, 2936, 3160, 3634, 3670, 3680, 3792, 4404, 4416, 4740, 5056, 5451, 5505, 5520, 5872, 6320, 7268, 7340, 7360, 7584, 8441, 8808, 9085, 9480, 10902, 11010, 11040, 11744, 12640, 14536, 14680, 15168, 16882, 17616, 18170, 18960, 21804, 22020, 22080, 23488, 25280, 25323, 27255, 28993, 29072, 29360, 33764, 35232, 36340, 37920, 42205, 43608, 44040, 50646, 54510, 57986, 58144, 58720, 67528, 70464, 72680, 75840, 84410, 86979, 87216, 88080, 101292, 109020, 115972, 116288, 117440, 126615, 135056, 144965, 145360, 168820, 173958, 174432, 176160, 202584, 218040, 231944, 253230, 270112, 289930, 290720, 337640, 347916, 348864, 352320, 405168, 434895, 436080, 463888, 506460, 540224, 579860, 581440, 666839, 675280, 695832, 810336, 869790, 872160, 927776, 1012920, 1159720, 1333678, 1350560, 1391664, 1620672, 1739580, 1744320, 1855552, 2000517, 2025840, 2319440, 2667356, 2701120, 2783328, 3334195, 3479160, 4001034, 4051680, 4638880, 5334712, 5566656, 6668390, 6958320, 8002068, 8103360, 9277760, 10002585, 10669424, 13336780, 13916640, 16004136, 20005170, 21338848, 26673560, 27833280, 32008272, 40010340, 42677696, 53347120, 64016544, 80020680, 106694240, 128033088, 160041360, 213388480, 320082720, 640165440]

約数ペア:

[(1, 640165440), (2, 320082720), (3, 213388480), (4, 160041360), (5, 128033088), (6, 106694240), (8, 80020680), (10, 64016544), (12, 53347120), (15, 42677696), (16, 40010340), (20, 32008272), (23, 27833280), (24, 26673560), (30, 21338848), (32, 20005170), (40, 16004136), (46, 13916640), (48, 13336780), (60, 10669424), (64, 10002585), (69, 9277760), (79, 8103360), (80, 8002068), (92, 6958320), (96, 6668390), (115, 5566656), (120, 5334712), (138, 4638880), (158, 4051680), (160, 4001034), (184, 3479160), (192, 3334195), (230, 2783328), (237, 2701120), (240, 2667356), (276, 2319440), (316, 2025840), (320, 2000517), (345, 1855552), (367, 1744320), (368, 1739580), (395, 1620672), (460, 1391664), (474, 1350560), (480, 1333678), (552, 1159720), (632, 1012920), (690, 927776), (734, 872160), (736, 869790), (790, 810336), (920, 695832), (948, 675280), (960, 666839), (1101, 581440), (1104, 579860), (1185, 540224), (1264, 506460), (1380, 463888), (1468, 436080), (1472, 434895), (1580, 405168), (1817, 352320), (1835, 348864), (1840, 347916), (1896, 337640), (2202, 290720), (2208, 289930), (2370, 270112), (2528, 253230), (2760, 231944), (2936, 218040), (3160, 202584), (3634, 176160), (3670, 174432), (3680, 173958), (3792, 168820), (4404, 145360), (4416, 144965), (4740, 135056), (5056, 126615), (5451, 117440), (5505, 116288), (5520, 115972), (5872, 109020), (6320, 101292), (7268, 88080), (7340, 87216), (7360, 86979), (7584, 84410), (8441, 75840), (8808, 72680), (9085, 70464), (9480, 67528), (10902, 58720), (11010, 58144), (11040, 57986), (11744, 54510), (12640, 50646), (14536, 44040), (14680, 43608), (15168, 42205), (16882, 37920), (17616, 36340), (18170, 35232), (18960, 33764), (21804, 29360), (22020, 29072), (22080, 28993), (23488, 27255), (25280, 25323)]