204901905

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{283}}^1$

素因数の和:430

約数の個数: 64

約数和(自身を含む): 366428160

約数和(自身を除く): 161526255

約数列:

[1, 3, 5, 13, 15, 39, 47, 65, 79, 141, 195, 235, 237, 283, 395, 611, 705, 849, 1027, 1185, 1415, 1833, 3055, 3081, 3679, 3713, 4245, 5135, 9165, 11037, 11139, 13301, 15405, 18395, 18565, 22357, 39903, 48269, 55185, 55695, 66505, 67071, 111785, 144807, 172913, 199515, 241345, 290641, 335355, 518739, 724035, 864565, 871923, 1050779, 1453205, 2593695, 3152337, 4359615, 5253895, 13660127, 15761685, 40980381, 68300635, 204901905]

約数ペア:

[(1, 204901905), (3, 68300635), (5, 40980381), (13, 15761685), (15, 13660127), (39, 5253895), (47, 4359615), (65, 3152337), (79, 2593695), (141, 1453205), (195, 1050779), (235, 871923), (237, 864565), (283, 724035), (395, 518739), (611, 335355), (705, 290641), (849, 241345), (1027, 199515), (1185, 172913), (1415, 144807), (1833, 111785), (3055, 67071), (3081, 66505), (3679, 55695), (3713, 55185), (4245, 48269), (5135, 39903), (9165, 22357), (11037, 18565), (11139, 18395), (13301, 15405)]