639333760

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{257}}^1$

素因数の和:325

約数の個数: 192

約数和(自身を含む): 1733698080

約数和(自身を除く): 1094364320

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 32, 40, 46, 52, 64, 65, 80, 92, 104, 115, 128, 130, 160, 169, 184, 208, 230, 257, 260, 299, 320, 338, 368, 416, 460, 514, 520, 598, 640, 676, 736, 832, 845, 920, 1028, 1040, 1196, 1285, 1352, 1472, 1495, 1664, 1690, 1840, 2056, 2080, 2392, 2570, 2704, 2944, 2990, 3341, 3380, 3680, 3887, 4112, 4160, 4784, 5140, 5408, 5911, 5980, 6682, 6760, 7360, 7774, 8224, 8320, 9568, 10280, 10816, 11822, 11960, 13364, 13520, 14720, 15548, 16448, 16705, 19136, 19435, 20560, 21632, 23644, 23920, 26728, 27040, 29555, 31096, 32896, 33410, 38272, 38870, 41120, 43433, 47288, 47840, 53456, 54080, 59110, 62192, 66820, 76843, 77740, 82240, 86866, 94576, 95680, 106912, 108160, 118220, 124384, 133640, 153686, 155480, 164480, 173732, 189152, 191360, 213824, 217165, 236440, 248768, 267280, 307372, 310960, 347464, 378304, 384215, 427648, 434330, 472880, 497536, 534560, 614744, 621920, 694928, 756608, 768430, 868660, 945760, 998959, 1069120, 1229488, 1243840, 1389856, 1536860, 1737320, 1891520, 1997918, 2138240, 2458976, 2487680, 2779712, 3073720, 3474640, 3783040, 3995836, 4917952, 4994795, 5559424, 6147440, 6949280, 7991672, 9835904, 9989590, 12294880, 13898560, 15983344, 19979180, 24589760, 27797120, 31966688, 39958360, 49179520, 63933376, 79916720, 127866752, 159833440, 319666880, 639333760]

約数ペア:

[(1, 639333760), (2, 319666880), (4, 159833440), (5, 127866752), (8, 79916720), (10, 63933376), (13, 49179520), (16, 39958360), (20, 31966688), (23, 27797120), (26, 24589760), (32, 19979180), (40, 15983344), (46, 13898560), (52, 12294880), (64, 9989590), (65, 9835904), (80, 7991672), (92, 6949280), (104, 6147440), (115, 5559424), (128, 4994795), (130, 4917952), (160, 3995836), (169, 3783040), (184, 3474640), (208, 3073720), (230, 2779712), (257, 2487680), (260, 2458976), (299, 2138240), (320, 1997918), (338, 1891520), (368, 1737320), (416, 1536860), (460, 1389856), (514, 1243840), (520, 1229488), (598, 1069120), (640, 998959), (676, 945760), (736, 868660), (832, 768430), (845, 756608), (920, 694928), (1028, 621920), (1040, 614744), (1196, 534560), (1285, 497536), (1352, 472880), (1472, 434330), (1495, 427648), (1664, 384215), (1690, 378304), (1840, 347464), (2056, 310960), (2080, 307372), (2392, 267280), (2570, 248768), (2704, 236440), (2944, 217165), (2990, 213824), (3341, 191360), (3380, 189152), (3680, 173732), (3887, 164480), (4112, 155480), (4160, 153686), (4784, 133640), (5140, 124384), (5408, 118220), (5911, 108160), (5980, 106912), (6682, 95680), (6760, 94576), (7360, 86866), (7774, 82240), (8224, 77740), (8320, 76843), (9568, 66820), (10280, 62192), (10816, 59110), (11822, 54080), (11960, 53456), (13364, 47840), (13520, 47288), (14720, 43433), (15548, 41120), (16448, 38870), (16705, 38272), (19136, 33410), (19435, 32896), (20560, 31096), (21632, 29555), (23644, 27040), (23920, 26728)]