21368880

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{761}}^1$

素因数の和:796

約数の個数: 160

約数和(自身を含む): 79369920

約数和(自身を除く): 58001040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 27, 30, 36, 39, 40, 45, 48, 52, 54, 60, 65, 72, 78, 80, 90, 104, 108, 117, 120, 130, 135, 144, 156, 180, 195, 208, 216, 234, 240, 260, 270, 312, 351, 360, 390, 432, 468, 520, 540, 585, 624, 702, 720, 761, 780, 936, 1040, 1080, 1170, 1404, 1522, 1560, 1755, 1872, 2160, 2283, 2340, 2808, 3044, 3120, 3510, 3805, 4566, 4680, 5616, 6088, 6849, 7020, 7610, 9132, 9360, 9893, 11415, 12176, 13698, 14040, 15220, 18264, 19786, 20547, 22830, 27396, 28080, 29679, 30440, 34245, 36528, 39572, 41094, 45660, 49465, 54792, 59358, 60880, 68490, 79144, 82188, 89037, 91320, 98930, 102735, 109584, 118716, 136980, 148395, 158288, 164376, 178074, 182640, 197860, 205470, 237432, 267111, 273960, 296790, 328752, 356148, 395720, 410940, 445185, 474864, 534222, 547920, 593580, 712296, 791440, 821880, 890370, 1068444, 1187160, 1335555, 1424592, 1643760, 1780740, 2136888, 2374320, 2671110, 3561480, 4273776, 5342220, 7122960, 10684440, 21368880]

約数ペア:

[(1, 21368880), (2, 10684440), (3, 7122960), (4, 5342220), (5, 4273776), (6, 3561480), (8, 2671110), (9, 2374320), (10, 2136888), (12, 1780740), (13, 1643760), (15, 1424592), (16, 1335555), (18, 1187160), (20, 1068444), (24, 890370), (26, 821880), (27, 791440), (30, 712296), (36, 593580), (39, 547920), (40, 534222), (45, 474864), (48, 445185), (52, 410940), (54, 395720), (60, 356148), (65, 328752), (72, 296790), (78, 273960), (80, 267111), (90, 237432), (104, 205470), (108, 197860), (117, 182640), (120, 178074), (130, 164376), (135, 158288), (144, 148395), (156, 136980), (180, 118716), (195, 109584), (208, 102735), (216, 98930), (234, 91320), (240, 89037), (260, 82188), (270, 79144), (312, 68490), (351, 60880), (360, 59358), (390, 54792), (432, 49465), (468, 45660), (520, 41094), (540, 39572), (585, 36528), (624, 34245), (702, 30440), (720, 29679), (761, 28080), (780, 27396), (936, 22830), (1040, 20547), (1080, 19786), (1170, 18264), (1404, 15220), (1522, 14040), (1560, 13698), (1755, 12176), (1872, 11415), (2160, 9893), (2283, 9360), (2340, 9132), (2808, 7610), (3044, 7020), (3120, 6849), (3510, 6088), (3805, 5616), (4566, 4680)]