68220520

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{137}}^1\times {\mathrm{211}}^1$

素因数の和:418

約数の個数: 64

約数和(自身を含む): 157982400

約数和(自身を除く): 89761880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 137, 211, 236, 274, 295, 422, 472, 548, 590, 685, 844, 1055, 1096, 1180, 1370, 1688, 2110, 2360, 2740, 4220, 5480, 8083, 8440, 12449, 16166, 24898, 28907, 32332, 40415, 49796, 57814, 62245, 64664, 80830, 99592, 115628, 124490, 144535, 161660, 231256, 248980, 289070, 323320, 497960, 578140, 1156280, 1705513, 3411026, 6822052, 8527565, 13644104, 17055130, 34110260, 68220520]

約数ペア:

[(1, 68220520), (2, 34110260), (4, 17055130), (5, 13644104), (8, 8527565), (10, 6822052), (20, 3411026), (40, 1705513), (59, 1156280), (118, 578140), (137, 497960), (211, 323320), (236, 289070), (274, 248980), (295, 231256), (422, 161660), (472, 144535), (548, 124490), (590, 115628), (685, 99592), (844, 80830), (1055, 64664), (1096, 62245), (1180, 57814), (1370, 49796), (1688, 40415), (2110, 32332), (2360, 28907), (2740, 24898), (4220, 16166), (5480, 12449), (8083, 8440)]