21284640

素因数分解:

$2^5\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{379}}^1$

素因数の和:416

約数の個数: 192

約数和(自身を含む): 80438400

約数和(自身を除く): 59153760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 27, 30, 32, 36, 39, 40, 45, 48, 52, 54, 60, 65, 72, 78, 80, 90, 96, 104, 108, 117, 120, 130, 135, 144, 156, 160, 180, 195, 208, 216, 234, 240, 260, 270, 288, 312, 351, 360, 379, 390, 416, 432, 468, 480, 520, 540, 585, 624, 702, 720, 758, 780, 864, 936, 1040, 1080, 1137, 1170, 1248, 1404, 1440, 1516, 1560, 1755, 1872, 1895, 2080, 2160, 2274, 2340, 2808, 3032, 3120, 3411, 3510, 3744, 3790, 4320, 4548, 4680, 4927, 5616, 5685, 6064, 6240, 6822, 7020, 7580, 9096, 9360, 9854, 10233, 11232, 11370, 12128, 13644, 14040, 14781, 15160, 17055, 18192, 18720, 19708, 20466, 22740, 24635, 27288, 28080, 29562, 30320, 34110, 36384, 39416, 40932, 44343, 45480, 49270, 51165, 54576, 56160, 59124, 60640, 68220, 73905, 78832, 81864, 88686, 90960, 98540, 102330, 109152, 118248, 133029, 136440, 147810, 157664, 163728, 177372, 181920, 197080, 204660, 221715, 236496, 266058, 272880, 295620, 327456, 354744, 394160, 409320, 443430, 472992, 532116, 545760, 591240, 665145, 709488, 788320, 818640, 886860, 1064232, 1182480, 1330290, 1418976, 1637280, 1773720, 2128464, 2364960, 2660580, 3547440, 4256928, 5321160, 7094880, 10642320, 21284640]

約数ペア:

[(1, 21284640), (2, 10642320), (3, 7094880), (4, 5321160), (5, 4256928), (6, 3547440), (8, 2660580), (9, 2364960), (10, 2128464), (12, 1773720), (13, 1637280), (15, 1418976), (16, 1330290), (18, 1182480), (20, 1064232), (24, 886860), (26, 818640), (27, 788320), (30, 709488), (32, 665145), (36, 591240), (39, 545760), (40, 532116), (45, 472992), (48, 443430), (52, 409320), (54, 394160), (60, 354744), (65, 327456), (72, 295620), (78, 272880), (80, 266058), (90, 236496), (96, 221715), (104, 204660), (108, 197080), (117, 181920), (120, 177372), (130, 163728), (135, 157664), (144, 147810), (156, 136440), (160, 133029), (180, 118248), (195, 109152), (208, 102330), (216, 98540), (234, 90960), (240, 88686), (260, 81864), (270, 78832), (288, 73905), (312, 68220), (351, 60640), (360, 59124), (379, 56160), (390, 54576), (416, 51165), (432, 49270), (468, 45480), (480, 44343), (520, 40932), (540, 39416), (585, 36384), (624, 34110), (702, 30320), (720, 29562), (758, 28080), (780, 27288), (864, 24635), (936, 22740), (1040, 20466), (1080, 19708), (1137, 18720), (1170, 18192), (1248, 17055), (1404, 15160), (1440, 14781), (1516, 14040), (1560, 13644), (1755, 12128), (1872, 11370), (1895, 11232), (2080, 10233), (2160, 9854), (2274, 9360), (2340, 9096), (2808, 7580), (3032, 7020), (3120, 6822), (3411, 6240), (3510, 6064), (3744, 5685), (3790, 5616), (4320, 4927), (4548, 4680)]