19749548

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{337}}^1$

素因数の和:391

約数の個数: 72

約数和(自身を含む): 45313632

約数和(自身を除く): 25564084

約数列:

[1, 2, 4, 7, 13, 14, 23, 26, 28, 46, 49, 52, 91, 92, 98, 161, 182, 196, 299, 322, 337, 364, 598, 637, 644, 674, 1127, 1196, 1274, 1348, 2093, 2254, 2359, 2548, 4186, 4381, 4508, 4718, 7751, 8372, 8762, 9436, 14651, 15502, 16513, 17524, 29302, 30667, 31004, 33026, 54257, 58604, 61334, 66052, 100763, 108514, 122668, 201526, 214669, 217028, 379799, 403052, 429338, 705341, 759598, 858676, 1410682, 1519196, 2821364, 4937387, 9874774, 19749548]

約数ペア:

[(1, 19749548), (2, 9874774), (4, 4937387), (7, 2821364), (13, 1519196), (14, 1410682), (23, 858676), (26, 759598), (28, 705341), (46, 429338), (49, 403052), (52, 379799), (91, 217028), (92, 214669), (98, 201526), (161, 122668), (182, 108514), (196, 100763), (299, 66052), (322, 61334), (337, 58604), (364, 54257), (598, 33026), (637, 31004), (644, 30667), (674, 29302), (1127, 17524), (1196, 16513), (1274, 15502), (1348, 14651), (2093, 9436), (2254, 8762), (2359, 8372), (2548, 7751), (4186, 4718), (4381, 4508)]