21890880

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{691}}^1$

素因数の和:725

約数の個数: 168

約数和(自身を含む): 82259424

約数和(自身を除く): 60368544

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 32, 33, 36, 40, 44, 45, 48, 55, 60, 64, 66, 72, 80, 88, 90, 96, 99, 110, 120, 132, 144, 160, 165, 176, 180, 192, 198, 220, 240, 264, 288, 320, 330, 352, 360, 396, 440, 480, 495, 528, 576, 660, 691, 704, 720, 792, 880, 960, 990, 1056, 1320, 1382, 1440, 1584, 1760, 1980, 2073, 2112, 2640, 2764, 2880, 3168, 3455, 3520, 3960, 4146, 5280, 5528, 6219, 6336, 6910, 7601, 7920, 8292, 10365, 10560, 11056, 12438, 13820, 15202, 15840, 16584, 20730, 22112, 22803, 24876, 27640, 30404, 31095, 31680, 33168, 38005, 41460, 44224, 45606, 49752, 55280, 60808, 62190, 66336, 68409, 76010, 82920, 91212, 99504, 110560, 114015, 121616, 124380, 132672, 136818, 152020, 165840, 182424, 199008, 221120, 228030, 243232, 248760, 273636, 304040, 331680, 342045, 364848, 398016, 456060, 486464, 497520, 547272, 608080, 663360, 684090, 729696, 912120, 995040, 1094544, 1216160, 1368180, 1459392, 1824240, 1990080, 2189088, 2432320, 2736360, 3648480, 4378176, 5472720, 7296960, 10945440, 21890880]

約数ペア:

[(1, 21890880), (2, 10945440), (3, 7296960), (4, 5472720), (5, 4378176), (6, 3648480), (8, 2736360), (9, 2432320), (10, 2189088), (11, 1990080), (12, 1824240), (15, 1459392), (16, 1368180), (18, 1216160), (20, 1094544), (22, 995040), (24, 912120), (30, 729696), (32, 684090), (33, 663360), (36, 608080), (40, 547272), (44, 497520), (45, 486464), (48, 456060), (55, 398016), (60, 364848), (64, 342045), (66, 331680), (72, 304040), (80, 273636), (88, 248760), (90, 243232), (96, 228030), (99, 221120), (110, 199008), (120, 182424), (132, 165840), (144, 152020), (160, 136818), (165, 132672), (176, 124380), (180, 121616), (192, 114015), (198, 110560), (220, 99504), (240, 91212), (264, 82920), (288, 76010), (320, 68409), (330, 66336), (352, 62190), (360, 60808), (396, 55280), (440, 49752), (480, 45606), (495, 44224), (528, 41460), (576, 38005), (660, 33168), (691, 31680), (704, 31095), (720, 30404), (792, 27640), (880, 24876), (960, 22803), (990, 22112), (1056, 20730), (1320, 16584), (1382, 15840), (1440, 15202), (1584, 13820), (1760, 12438), (1980, 11056), (2073, 10560), (2112, 10365), (2640, 8292), (2764, 7920), (2880, 7601), (3168, 6910), (3455, 6336), (3520, 6219), (3960, 5528), (4146, 5280)]