8440384640

素因数分解:

$2^7\times 5^1\times {\mathrm{41}}^1\times {\mathrm{321661}}^1$

素因数の和:321721

約数の個数: 64

約数和(自身を含む): 20670000120

約数和(自身を除く): 12229615480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 128, 160, 164, 205, 320, 328, 410, 640, 656, 820, 1312, 1640, 2624, 3280, 5248, 6560, 13120, 26240, 321661, 643322, 1286644, 1608305, 2573288, 3216610, 5146576, 6433220, 10293152, 12866440, 13188101, 20586304, 25732880, 26376202, 41172608, 51465760, 52752404, 65940505, 102931520, 105504808, 131881010, 205863040, 211009616, 263762020, 422019232, 527524040, 844038464, 1055048080, 1688076928, 2110096160, 4220192320, 8440384640]

約数ペア:

[(1, 8440384640), (2, 4220192320), (4, 2110096160), (5, 1688076928), (8, 1055048080), (10, 844038464), (16, 527524040), (20, 422019232), (32, 263762020), (40, 211009616), (41, 205863040), (64, 131881010), (80, 105504808), (82, 102931520), (128, 65940505), (160, 52752404), (164, 51465760), (205, 41172608), (320, 26376202), (328, 25732880), (410, 20586304), (640, 13188101), (656, 12866440), (820, 10293152), (1312, 6433220), (1640, 5146576), (2624, 3216610), (3280, 2573288), (5248, 1608305), (6560, 1286644), (13120, 643322), (26240, 321661)]