259940642

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{311}}^1$

素因数の和:435

約数の個数: 64

約数和(自身を含む): 467970048

約数和(自身を除く): 208029406

約数列:

[1, 2, 13, 17, 26, 31, 34, 61, 62, 122, 221, 311, 403, 442, 527, 622, 793, 806, 1037, 1054, 1586, 1891, 2074, 3782, 4043, 5287, 6851, 8086, 9641, 10574, 13481, 13702, 18971, 19282, 24583, 26962, 32147, 37942, 49166, 64294, 68731, 125333, 137462, 163897, 246623, 250666, 322507, 327794, 417911, 493246, 588101, 645014, 835822, 1176202, 2130661, 4192591, 4261322, 7645313, 8385182, 9997717, 15290626, 19995434, 129970321, 259940642]

約数ペア:

[(1, 259940642), (2, 129970321), (13, 19995434), (17, 15290626), (26, 9997717), (31, 8385182), (34, 7645313), (61, 4261322), (62, 4192591), (122, 2130661), (221, 1176202), (311, 835822), (403, 645014), (442, 588101), (527, 493246), (622, 417911), (793, 327794), (806, 322507), (1037, 250666), (1054, 246623), (1586, 163897), (1891, 137462), (2074, 125333), (3782, 68731), (4043, 64294), (5287, 49166), (6851, 37942), (8086, 32147), (9641, 26962), (10574, 24583), (13481, 19282), (13702, 18971)]