21055320

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1$

素因数の和:450

約数の個数: 192

約数和(自身を含む): 80589600

約数和(自身を除く): 59534280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 15, 18, 20, 22, 24, 26, 30, 33, 36, 39, 40, 44, 45, 52, 55, 60, 65, 66, 72, 78, 88, 90, 99, 104, 110, 117, 120, 130, 132, 143, 156, 165, 180, 195, 198, 220, 234, 260, 264, 286, 312, 330, 360, 390, 396, 409, 429, 440, 468, 495, 520, 572, 585, 660, 715, 780, 792, 818, 858, 936, 990, 1144, 1170, 1227, 1287, 1320, 1430, 1560, 1636, 1716, 1980, 2045, 2145, 2340, 2454, 2574, 2860, 3272, 3432, 3681, 3960, 4090, 4290, 4499, 4680, 4908, 5148, 5317, 5720, 6135, 6435, 7362, 8180, 8580, 8998, 9816, 10296, 10634, 12270, 12870, 13497, 14724, 15951, 16360, 17160, 17996, 18405, 21268, 22495, 24540, 25740, 26585, 26994, 29448, 31902, 35992, 36810, 40491, 42536, 44990, 47853, 49080, 51480, 53170, 53988, 58487, 63804, 67485, 73620, 79755, 80982, 89980, 95706, 106340, 107976, 116974, 127608, 134970, 147240, 159510, 161964, 175461, 179960, 191412, 202455, 212680, 233948, 239265, 269940, 292435, 319020, 323928, 350922, 382824, 404910, 467896, 478530, 526383, 539880, 584870, 638040, 701844, 809820, 877305, 957060, 1052766, 1169740, 1403688, 1619640, 1754610, 1914120, 2105532, 2339480, 2631915, 3509220, 4211064, 5263830, 7018440, 10527660, 21055320]

約数ペア:

[(1, 21055320), (2, 10527660), (3, 7018440), (4, 5263830), (5, 4211064), (6, 3509220), (8, 2631915), (9, 2339480), (10, 2105532), (11, 1914120), (12, 1754610), (13, 1619640), (15, 1403688), (18, 1169740), (20, 1052766), (22, 957060), (24, 877305), (26, 809820), (30, 701844), (33, 638040), (36, 584870), (39, 539880), (40, 526383), (44, 478530), (45, 467896), (52, 404910), (55, 382824), (60, 350922), (65, 323928), (66, 319020), (72, 292435), (78, 269940), (88, 239265), (90, 233948), (99, 212680), (104, 202455), (110, 191412), (117, 179960), (120, 175461), (130, 161964), (132, 159510), (143, 147240), (156, 134970), (165, 127608), (180, 116974), (195, 107976), (198, 106340), (220, 95706), (234, 89980), (260, 80982), (264, 79755), (286, 73620), (312, 67485), (330, 63804), (360, 58487), (390, 53988), (396, 53170), (409, 51480), (429, 49080), (440, 47853), (468, 44990), (495, 42536), (520, 40491), (572, 36810), (585, 35992), (660, 31902), (715, 29448), (780, 26994), (792, 26585), (818, 25740), (858, 24540), (936, 22495), (990, 21268), (1144, 18405), (1170, 17996), (1227, 17160), (1287, 16360), (1320, 15951), (1430, 14724), (1560, 13497), (1636, 12870), (1716, 12270), (1980, 10634), (2045, 10296), (2145, 9816), (2340, 8998), (2454, 8580), (2574, 8180), (2860, 7362), (3272, 6435), (3432, 6135), (3681, 5720), (3960, 5317), (4090, 5148), (4290, 4908), (4499, 4680)]