28020993

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:115

約数の個数: 96

約数和(自身を含む): 53932032

約数和(自身を除く): 25911039

約数列:

[1, 3, 7, 11, 13, 21, 31, 33, 39, 43, 49, 77, 91, 93, 129, 143, 147, 217, 231, 273, 301, 341, 403, 429, 473, 539, 559, 637, 651, 903, 1001, 1023, 1209, 1333, 1419, 1519, 1617, 1677, 1911, 2107, 2387, 2821, 3003, 3311, 3913, 3999, 4433, 4557, 6149, 6321, 7007, 7161, 8463, 9331, 9933, 11739, 13299, 14663, 16709, 17329, 18447, 19747, 21021, 23177, 27391, 27993, 31031, 43043, 43989, 50127, 51987, 59241, 65317, 69531, 82173, 93093, 102641, 121303, 129129, 190619, 195951, 217217, 301301, 307923, 363909, 571857, 651651, 718487, 849121, 903903, 1334333, 2155461, 2547363, 4002999, 9340331, 28020993]

約数ペア:

[(1, 28020993), (3, 9340331), (7, 4002999), (11, 2547363), (13, 2155461), (21, 1334333), (31, 903903), (33, 849121), (39, 718487), (43, 651651), (49, 571857), (77, 363909), (91, 307923), (93, 301301), (129, 217217), (143, 195951), (147, 190619), (217, 129129), (231, 121303), (273, 102641), (301, 93093), (341, 82173), (403, 69531), (429, 65317), (473, 59241), (539, 51987), (559, 50127), (637, 43989), (651, 43043), (903, 31031), (1001, 27993), (1023, 27391), (1209, 23177), (1333, 21021), (1419, 19747), (1519, 18447), (1617, 17329), (1677, 16709), (1911, 14663), (2107, 13299), (2387, 11739), (2821, 9933), (3003, 9331), (3311, 8463), (3913, 7161), (3999, 7007), (4433, 6321), (4557, 6149)]