2561680

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:136

約数の個数: 80

約数和(自身を含む): 6749568

約数和(自身を除く): 4187888

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 41, 44, 55, 71, 80, 82, 88, 110, 142, 164, 176, 205, 220, 284, 328, 355, 410, 440, 451, 568, 656, 710, 781, 820, 880, 902, 1136, 1420, 1562, 1640, 1804, 2255, 2840, 2911, 3124, 3280, 3608, 3905, 4510, 5680, 5822, 6248, 7216, 7810, 9020, 11644, 12496, 14555, 15620, 18040, 23288, 29110, 31240, 32021, 36080, 46576, 58220, 62480, 64042, 116440, 128084, 160105, 232880, 256168, 320210, 512336, 640420, 1280840, 2561680]

約数ペア:

[(1, 2561680), (2, 1280840), (4, 640420), (5, 512336), (8, 320210), (10, 256168), (11, 232880), (16, 160105), (20, 128084), (22, 116440), (40, 64042), (41, 62480), (44, 58220), (55, 46576), (71, 36080), (80, 32021), (82, 31240), (88, 29110), (110, 23288), (142, 18040), (164, 15620), (176, 14555), (205, 12496), (220, 11644), (284, 9020), (328, 7810), (355, 7216), (410, 6248), (440, 5822), (451, 5680), (568, 4510), (656, 3905), (710, 3608), (781, 3280), (820, 3124), (880, 2911), (902, 2840), (1136, 2255), (1420, 1804), (1562, 1640)]