21165760

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{859}}^1$

素因数の和:894

約数の個数: 112

約数和(自身を含む): 62910720

約数和(自身を除く): 41744960

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 55, 56, 64, 70, 77, 80, 88, 110, 112, 140, 154, 160, 176, 220, 224, 280, 308, 320, 352, 385, 440, 448, 560, 616, 704, 770, 859, 880, 1120, 1232, 1540, 1718, 1760, 2240, 2464, 3080, 3436, 3520, 4295, 4928, 6013, 6160, 6872, 8590, 9449, 12026, 12320, 13744, 17180, 18898, 24052, 24640, 27488, 30065, 34360, 37796, 47245, 48104, 54976, 60130, 66143, 68720, 75592, 94490, 96208, 120260, 132286, 137440, 151184, 188980, 192416, 240520, 264572, 274880, 302368, 330715, 377960, 384832, 481040, 529144, 604736, 661430, 755920, 962080, 1058288, 1322860, 1511840, 1924160, 2116576, 2645720, 3023680, 4233152, 5291440, 10582880, 21165760]

約数ペア:

[(1, 21165760), (2, 10582880), (4, 5291440), (5, 4233152), (7, 3023680), (8, 2645720), (10, 2116576), (11, 1924160), (14, 1511840), (16, 1322860), (20, 1058288), (22, 962080), (28, 755920), (32, 661430), (35, 604736), (40, 529144), (44, 481040), (55, 384832), (56, 377960), (64, 330715), (70, 302368), (77, 274880), (80, 264572), (88, 240520), (110, 192416), (112, 188980), (140, 151184), (154, 137440), (160, 132286), (176, 120260), (220, 96208), (224, 94490), (280, 75592), (308, 68720), (320, 66143), (352, 60130), (385, 54976), (440, 48104), (448, 47245), (560, 37796), (616, 34360), (704, 30065), (770, 27488), (859, 24640), (880, 24052), (1120, 18898), (1232, 17180), (1540, 13744), (1718, 12320), (1760, 12026), (2240, 9449), (2464, 8590), (3080, 6872), (3436, 6160), (3520, 6013), (4295, 4928)]