21255557136

素因数分解:

$2^4\times 3^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{156641}}^1$

素因数の和:156920

約数の個数: 80

約数和(自身を含む): 60135490368

約数和(自身を除く): 38879933232

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 33, 44, 48, 66, 88, 132, 176, 257, 264, 514, 528, 771, 1028, 1542, 2056, 2827, 3084, 4112, 5654, 6168, 8481, 11308, 12336, 16962, 22616, 33924, 45232, 67848, 135696, 156641, 313282, 469923, 626564, 939846, 1253128, 1723051, 1879692, 2506256, 3446102, 3759384, 5169153, 6892204, 7518768, 10338306, 13784408, 20676612, 27568816, 40256737, 41353224, 80513474, 82706448, 120770211, 161026948, 241540422, 322053896, 442824107, 483080844, 644107792, 885648214, 966161688, 1328472321, 1771296428, 1932323376, 2656944642, 3542592856, 5313889284, 7085185712, 10627778568, 21255557136]

約数ペア:

[(1, 21255557136), (2, 10627778568), (3, 7085185712), (4, 5313889284), (6, 3542592856), (8, 2656944642), (11, 1932323376), (12, 1771296428), (16, 1328472321), (22, 966161688), (24, 885648214), (33, 644107792), (44, 483080844), (48, 442824107), (66, 322053896), (88, 241540422), (132, 161026948), (176, 120770211), (257, 82706448), (264, 80513474), (514, 41353224), (528, 40256737), (771, 27568816), (1028, 20676612), (1542, 13784408), (2056, 10338306), (2827, 7518768), (3084, 6892204), (4112, 5169153), (5654, 3759384), (6168, 3446102), (8481, 2506256), (11308, 1879692), (12336, 1723051), (16962, 1253128), (22616, 939846), (33924, 626564), (45232, 469923), (67848, 313282), (135696, 156641)]