268394555

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{311}}^1$

素因数の和:428

約数の個数: 64

約数和(自身を含む): 407586816

約数和(自身を除く): 139192261

約数列:

[1, 5, 11, 13, 17, 55, 65, 71, 85, 143, 187, 221, 311, 355, 715, 781, 923, 935, 1105, 1207, 1555, 2431, 3421, 3905, 4043, 4615, 5287, 6035, 10153, 12155, 13277, 15691, 17105, 20215, 22081, 26435, 44473, 50765, 58157, 66385, 68731, 78455, 110405, 172601, 222365, 242891, 287053, 290785, 343655, 375377, 756041, 863005, 1214455, 1435265, 1876885, 3157583, 3780205, 4129147, 4879901, 15787915, 20645735, 24399505, 53678911, 268394555]

約数ペア:

[(1, 268394555), (5, 53678911), (11, 24399505), (13, 20645735), (17, 15787915), (55, 4879901), (65, 4129147), (71, 3780205), (85, 3157583), (143, 1876885), (187, 1435265), (221, 1214455), (311, 863005), (355, 756041), (715, 375377), (781, 343655), (923, 290785), (935, 287053), (1105, 242891), (1207, 222365), (1555, 172601), (2431, 110405), (3421, 78455), (3905, 68731), (4043, 66385), (4615, 58157), (5287, 50765), (6035, 44473), (10153, 26435), (12155, 22081), (13277, 20215), (15691, 17105)]