20542496

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1$

素因数の和:178

約数の個数: 96

約数和(自身を含む): 48263040

約数和(自身を除く): 27720544

約数列:

[1, 2, 4, 8, 13, 16, 19, 23, 26, 32, 38, 46, 52, 76, 92, 104, 113, 152, 184, 208, 226, 247, 299, 304, 368, 416, 437, 452, 494, 598, 608, 736, 874, 904, 988, 1196, 1469, 1748, 1808, 1976, 2147, 2392, 2599, 2938, 3496, 3616, 3952, 4294, 4784, 5198, 5681, 5876, 6992, 7904, 8588, 9568, 10396, 11362, 11752, 13984, 17176, 20792, 22724, 23504, 27911, 33787, 34352, 41584, 45448, 47008, 49381, 55822, 67574, 68704, 83168, 90896, 98762, 111644, 135148, 181792, 197524, 223288, 270296, 395048, 446576, 540592, 641953, 790096, 893152, 1081184, 1283906, 1580192, 2567812, 5135624, 10271248, 20542496]

約数ペア:

[(1, 20542496), (2, 10271248), (4, 5135624), (8, 2567812), (13, 1580192), (16, 1283906), (19, 1081184), (23, 893152), (26, 790096), (32, 641953), (38, 540592), (46, 446576), (52, 395048), (76, 270296), (92, 223288), (104, 197524), (113, 181792), (152, 135148), (184, 111644), (208, 98762), (226, 90896), (247, 83168), (299, 68704), (304, 67574), (368, 55822), (416, 49381), (437, 47008), (452, 45448), (494, 41584), (598, 34352), (608, 33787), (736, 27911), (874, 23504), (904, 22724), (988, 20792), (1196, 17176), (1469, 13984), (1748, 11752), (1808, 11362), (1976, 10396), (2147, 9568), (2392, 8588), (2599, 7904), (2938, 6992), (3496, 5876), (3616, 5681), (3952, 5198), (4294, 4784)]