28480088

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1$

素因数の和:145

約数の個数: 128

約数和(自身を含む): 72576000

約数和(自身を除く): 44095912

約数列:

[1, 2, 4, 7, 8, 13, 14, 19, 26, 28, 29, 38, 52, 56, 58, 71, 76, 91, 104, 116, 133, 142, 152, 182, 203, 232, 247, 266, 284, 364, 377, 406, 494, 497, 532, 551, 568, 728, 754, 812, 923, 988, 994, 1064, 1102, 1349, 1508, 1624, 1729, 1846, 1976, 1988, 2059, 2204, 2639, 2698, 3016, 3458, 3692, 3857, 3976, 4118, 4408, 5278, 5396, 6461, 6916, 7163, 7384, 7714, 8236, 9443, 10556, 10792, 12922, 13832, 14326, 14413, 15428, 16472, 17537, 18886, 21112, 25844, 26767, 28652, 28826, 30856, 35074, 37772, 39121, 50141, 51688, 53534, 57304, 57652, 70148, 75544, 78242, 100282, 107068, 115304, 122759, 140296, 156484, 187369, 200564, 214136, 245518, 273847, 312968, 374738, 401128, 491036, 508573, 547694, 749476, 982072, 1017146, 1095388, 1498952, 2034292, 2190776, 3560011, 4068584, 7120022, 14240044, 28480088]

約数ペア:

[(1, 28480088), (2, 14240044), (4, 7120022), (7, 4068584), (8, 3560011), (13, 2190776), (14, 2034292), (19, 1498952), (26, 1095388), (28, 1017146), (29, 982072), (38, 749476), (52, 547694), (56, 508573), (58, 491036), (71, 401128), (76, 374738), (91, 312968), (104, 273847), (116, 245518), (133, 214136), (142, 200564), (152, 187369), (182, 156484), (203, 140296), (232, 122759), (247, 115304), (266, 107068), (284, 100282), (364, 78242), (377, 75544), (406, 70148), (494, 57652), (497, 57304), (532, 53534), (551, 51688), (568, 50141), (728, 39121), (754, 37772), (812, 35074), (923, 30856), (988, 28826), (994, 28652), (1064, 26767), (1102, 25844), (1349, 21112), (1508, 18886), (1624, 17537), (1729, 16472), (1846, 15428), (1976, 14413), (1988, 14326), (2059, 13832), (2204, 12922), (2639, 10792), (2698, 10556), (3016, 9443), (3458, 8236), (3692, 7714), (3857, 7384), (3976, 7163), (4118, 6916), (4408, 6461), (5278, 5396)]