21985177920

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{109}}^1\times {\mathrm{727}}^1$

素因数の和:890

約数の個数: 336

約数和(自身を含む): 74933738880

約数和(自身を除く): 52948560960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 32, 34, 40, 48, 51, 60, 64, 68, 80, 85, 96, 102, 109, 120, 136, 160, 170, 192, 204, 218, 240, 255, 272, 289, 320, 327, 340, 408, 436, 480, 510, 544, 545, 578, 654, 680, 727, 816, 867, 872, 960, 1020, 1088, 1090, 1156, 1308, 1360, 1445, 1454, 1632, 1635, 1734, 1744, 1853, 2040, 2180, 2181, 2312, 2616, 2720, 2890, 2908, 3264, 3270, 3468, 3488, 3635, 3706, 4080, 4335, 4360, 4362, 4624, 5232, 5440, 5559, 5780, 5816, 6540, 6936, 6976, 7270, 7412, 8160, 8670, 8720, 8724, 9248, 9265, 10464, 10905, 11118, 11560, 11632, 12359, 13080, 13872, 14540, 14824, 16320, 17340, 17440, 17448, 18496, 18530, 20928, 21810, 22236, 23120, 23264, 24718, 26160, 27744, 27795, 29080, 29648, 31501, 34680, 34880, 34896, 37060, 37077, 43620, 44472, 46240, 46528, 49436, 52320, 55488, 55590, 58160, 59296, 61795, 63002, 69360, 69792, 74120, 74154, 79243, 87240, 88944, 92480, 94503, 98872, 104640, 111180, 116320, 118592, 123590, 126004, 138720, 139584, 148240, 148308, 157505, 158486, 174480, 177888, 185385, 189006, 197744, 210103, 222360, 232640, 237729, 247180, 252008, 277440, 296480, 296616, 315010, 316972, 348960, 355776, 370770, 378012, 395488, 396215, 420206, 444720, 472515, 475458, 494360, 504016, 592960, 593232, 630020, 630309, 633944, 697920, 741540, 756024, 790976, 792430, 840412, 889440, 945030, 950916, 988720, 1008032, 1050515, 1186464, 1188645, 1260040, 1260618, 1267888, 1347131, 1483080, 1512048, 1584860, 1680824, 1778880, 1890060, 1901832, 1977440, 2016064, 2101030, 2372928, 2377290, 2520080, 2521236, 2535776, 2694262, 2966160, 3024096, 3151545, 3169720, 3361648, 3780120, 3803664, 3954880, 4041393, 4202060, 4754580, 5040160, 5042472, 5071552, 5388524, 5932320, 6048192, 6303090, 6339440, 6723296, 6735655, 7560240, 7607328, 8082786, 8404120, 9509160, 10080320, 10084944, 10777048, 11864640, 12606180, 12678880, 13446592, 13471310, 15120480, 15214656, 16165572, 16808240, 19018320, 20169888, 20206965, 21554096, 22901227, 25212360, 25357760, 26942620, 30240960, 32331144, 33616480, 38036640, 40339776, 40413930, 43108192, 45802454, 50424720, 53885240, 64662288, 67232960, 68703681, 76073280, 80827860, 86216384, 91604908, 100849440, 107770480, 114506135, 129324576, 137407362, 161655720, 183209816, 201698880, 215540960, 229012270, 258649152, 274814724, 323311440, 343518405, 366419632, 431081920, 458024540, 549629448, 646622880, 687036810, 732839264, 916049080, 1099258896, 1293245760, 1374073620, 1465678528, 1832098160, 2198517792, 2748147240, 3664196320, 4397035584, 5496294480, 7328392640, 10992588960, 21985177920]

約数ペア:

[(1, 21985177920), (2, 10992588960), (3, 7328392640), (4, 5496294480), (5, 4397035584), (6, 3664196320), (8, 2748147240), (10, 2198517792), (12, 1832098160), (15, 1465678528), (16, 1374073620), (17, 1293245760), (20, 1099258896), (24, 916049080), (30, 732839264), (32, 687036810), (34, 646622880), (40, 549629448), (48, 458024540), (51, 431081920), (60, 366419632), (64, 343518405), (68, 323311440), (80, 274814724), (85, 258649152), (96, 229012270), (102, 215540960), (109, 201698880), (120, 183209816), (136, 161655720), (160, 137407362), (170, 129324576), (192, 114506135), (204, 107770480), (218, 100849440), (240, 91604908), (255, 86216384), (272, 80827860), (289, 76073280), (320, 68703681), (327, 67232960), (340, 64662288), (408, 53885240), (436, 50424720), (480, 45802454), (510, 43108192), (544, 40413930), (545, 40339776), (578, 38036640), (654, 33616480), (680, 32331144), (727, 30240960), (816, 26942620), (867, 25357760), (872, 25212360), (960, 22901227), (1020, 21554096), (1088, 20206965), (1090, 20169888), (1156, 19018320), (1308, 16808240), (1360, 16165572), (1445, 15214656), (1454, 15120480), (1632, 13471310), (1635, 13446592), (1734, 12678880), (1744, 12606180), (1853, 11864640), (2040, 10777048), (2180, 10084944), (2181, 10080320), (2312, 9509160), (2616, 8404120), (2720, 8082786), (2890, 7607328), (2908, 7560240), (3264, 6735655), (3270, 6723296), (3468, 6339440), (3488, 6303090), (3635, 6048192), (3706, 5932320), (4080, 5388524), (4335, 5071552), (4360, 5042472), (4362, 5040160), (4624, 4754580), (5232, 4202060), (5440, 4041393), (5559, 3954880), (5780, 3803664), (5816, 3780120), (6540, 3361648), (6936, 3169720), (6976, 3151545), (7270, 3024096), (7412, 2966160), (8160, 2694262), (8670, 2535776), (8720, 2521236), (8724, 2520080), (9248, 2377290), (9265, 2372928), (10464, 2101030), (10905, 2016064), (11118, 1977440), (11560, 1901832), (11632, 1890060), (12359, 1778880), (13080, 1680824), (13872, 1584860), (14540, 1512048), (14824, 1483080), (16320, 1347131), (17340, 1267888), (17440, 1260618), (17448, 1260040), (18496, 1188645), (18530, 1186464), (20928, 1050515), (21810, 1008032), (22236, 988720), (23120, 950916), (23264, 945030), (24718, 889440), (26160, 840412), (27744, 792430), (27795, 790976), (29080, 756024), (29648, 741540), (31501, 697920), (34680, 633944), (34880, 630309), (34896, 630020), (37060, 593232), (37077, 592960), (43620, 504016), (44472, 494360), (46240, 475458), (46528, 472515), (49436, 444720), (52320, 420206), (55488, 396215), (55590, 395488), (58160, 378012), (59296, 370770), (61795, 355776), (63002, 348960), (69360, 316972), (69792, 315010), (74120, 296616), (74154, 296480), (79243, 277440), (87240, 252008), (88944, 247180), (92480, 237729), (94503, 232640), (98872, 222360), (104640, 210103), (111180, 197744), (116320, 189006), (118592, 185385), (123590, 177888), (126004, 174480), (138720, 158486), (139584, 157505), (148240, 148308)]