257371920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{887}}^1$

素因数の和:950

約数の個数: 240

約数和(自身を含む): 961938432

約数和(自身を除く): 704566512

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 31, 36, 39, 40, 45, 48, 52, 60, 62, 65, 72, 78, 80, 90, 93, 104, 117, 120, 124, 130, 144, 155, 156, 180, 186, 195, 208, 234, 240, 248, 260, 279, 310, 312, 360, 372, 390, 403, 465, 468, 496, 520, 558, 585, 620, 624, 720, 744, 780, 806, 887, 930, 936, 1040, 1116, 1170, 1209, 1240, 1395, 1488, 1560, 1612, 1774, 1860, 1872, 2015, 2232, 2340, 2418, 2480, 2661, 2790, 3120, 3224, 3548, 3627, 3720, 4030, 4435, 4464, 4680, 4836, 5322, 5580, 6045, 6448, 7096, 7254, 7440, 7983, 8060, 8870, 9360, 9672, 10644, 11160, 11531, 12090, 13305, 14192, 14508, 15966, 16120, 17740, 18135, 19344, 21288, 22320, 23062, 24180, 26610, 27497, 29016, 31932, 32240, 34593, 35480, 36270, 39915, 42576, 46124, 48360, 53220, 54994, 57655, 58032, 63864, 69186, 70960, 72540, 79830, 82491, 92248, 96720, 103779, 106440, 109988, 115310, 127728, 137485, 138372, 145080, 159660, 164982, 172965, 184496, 207558, 212880, 219976, 230620, 247473, 274970, 276744, 290160, 319320, 329964, 345930, 357461, 412455, 415116, 439952, 461240, 494946, 518895, 549940, 553488, 638640, 659928, 691860, 714922, 824910, 830232, 922480, 989892, 1037790, 1072383, 1099880, 1237365, 1319856, 1383720, 1429844, 1649820, 1660464, 1787305, 1979784, 2075580, 2144766, 2199760, 2474730, 2767440, 2859688, 3217149, 3299640, 3574610, 3959568, 4151160, 4289532, 4949460, 5361915, 5719376, 6434298, 6599280, 7149220, 8302320, 8579064, 9898920, 10723830, 12868596, 14298440, 16085745, 17158128, 19797840, 21447660, 25737192, 28596880, 32171490, 42895320, 51474384, 64342980, 85790640, 128685960, 257371920]

約数ペア:

[(1, 257371920), (2, 128685960), (3, 85790640), (4, 64342980), (5, 51474384), (6, 42895320), (8, 32171490), (9, 28596880), (10, 25737192), (12, 21447660), (13, 19797840), (15, 17158128), (16, 16085745), (18, 14298440), (20, 12868596), (24, 10723830), (26, 9898920), (30, 8579064), (31, 8302320), (36, 7149220), (39, 6599280), (40, 6434298), (45, 5719376), (48, 5361915), (52, 4949460), (60, 4289532), (62, 4151160), (65, 3959568), (72, 3574610), (78, 3299640), (80, 3217149), (90, 2859688), (93, 2767440), (104, 2474730), (117, 2199760), (120, 2144766), (124, 2075580), (130, 1979784), (144, 1787305), (155, 1660464), (156, 1649820), (180, 1429844), (186, 1383720), (195, 1319856), (208, 1237365), (234, 1099880), (240, 1072383), (248, 1037790), (260, 989892), (279, 922480), (310, 830232), (312, 824910), (360, 714922), (372, 691860), (390, 659928), (403, 638640), (465, 553488), (468, 549940), (496, 518895), (520, 494946), (558, 461240), (585, 439952), (620, 415116), (624, 412455), (720, 357461), (744, 345930), (780, 329964), (806, 319320), (887, 290160), (930, 276744), (936, 274970), (1040, 247473), (1116, 230620), (1170, 219976), (1209, 212880), (1240, 207558), (1395, 184496), (1488, 172965), (1560, 164982), (1612, 159660), (1774, 145080), (1860, 138372), (1872, 137485), (2015, 127728), (2232, 115310), (2340, 109988), (2418, 106440), (2480, 103779), (2661, 96720), (2790, 92248), (3120, 82491), (3224, 79830), (3548, 72540), (3627, 70960), (3720, 69186), (4030, 63864), (4435, 58032), (4464, 57655), (4680, 54994), (4836, 53220), (5322, 48360), (5580, 46124), (6045, 42576), (6448, 39915), (7096, 36270), (7254, 35480), (7440, 34593), (7983, 32240), (8060, 31932), (8870, 29016), (9360, 27497), (9672, 26610), (10644, 24180), (11160, 23062), (11531, 22320), (12090, 21288), (13305, 19344), (14192, 18135), (14508, 17740), (15966, 16120)]