19849851

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1$

素因数の和:165

約数の個数: 72

約数和(自身を含む): 36990720

約数和(自身を除く): 17140869

約数列:

[1, 3, 7, 9, 19, 21, 23, 49, 57, 63, 69, 103, 133, 147, 161, 171, 207, 309, 399, 437, 441, 483, 721, 927, 931, 1127, 1197, 1311, 1449, 1957, 2163, 2369, 2793, 3059, 3381, 3933, 5047, 5871, 6489, 7107, 8379, 9177, 10143, 13699, 15141, 16583, 17613, 21321, 21413, 27531, 41097, 45011, 45423, 49749, 64239, 95893, 116081, 123291, 135033, 149247, 192717, 287679, 315077, 348243, 405099, 863037, 945231, 1044729, 2205539, 2835693, 6616617, 19849851]

約数ペア:

[(1, 19849851), (3, 6616617), (7, 2835693), (9, 2205539), (19, 1044729), (21, 945231), (23, 863037), (49, 405099), (57, 348243), (63, 315077), (69, 287679), (103, 192717), (133, 149247), (147, 135033), (161, 123291), (171, 116081), (207, 95893), (309, 64239), (399, 49749), (437, 45423), (441, 45011), (483, 41097), (721, 27531), (927, 21413), (931, 21321), (1127, 17613), (1197, 16583), (1311, 15141), (1449, 13699), (1957, 10143), (2163, 9177), (2369, 8379), (2793, 7107), (3059, 6489), (3381, 5871), (3933, 5047)]