257688431

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{797}}^1$

素因数の和:864

約数の個数: 64

約数和(自身を含む): 386104320

約数和(自身を除く): 128415889

約数列:

[1, 7, 11, 13, 17, 19, 77, 91, 119, 133, 143, 187, 209, 221, 247, 323, 797, 1001, 1309, 1463, 1547, 1729, 2261, 2431, 2717, 3553, 4199, 5579, 8767, 10361, 13549, 15143, 17017, 19019, 24871, 29393, 46189, 61369, 72527, 94843, 106001, 113971, 149039, 166573, 176137, 196859, 257431, 323323, 797797, 1043273, 1166011, 1232959, 1378013, 1802017, 1937507, 2165449, 2831741, 3346603, 13562549, 15158143, 19822187, 23426221, 36812633, 257688431]

約数ペア:

[(1, 257688431), (7, 36812633), (11, 23426221), (13, 19822187), (17, 15158143), (19, 13562549), (77, 3346603), (91, 2831741), (119, 2165449), (133, 1937507), (143, 1802017), (187, 1378013), (209, 1232959), (221, 1166011), (247, 1043273), (323, 797797), (797, 323323), (1001, 257431), (1309, 196859), (1463, 176137), (1547, 166573), (1729, 149039), (2261, 113971), (2431, 106001), (2717, 94843), (3553, 72527), (4199, 61369), (5579, 46189), (8767, 29393), (10361, 24871), (13549, 19019), (15143, 17017)]