691520

素因数分解:

$2^6\times 5^1\times {\mathrm{2161}}^1$

素因数の和:2178

約数の個数: 28

約数和(自身を含む): 1647444

約数和(自身を除く): 955924

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 2161, 4322, 8644, 10805, 17288, 21610, 34576, 43220, 69152, 86440, 138304, 172880, 345760, 691520]

約数ペア:

[(1, 691520), (2, 345760), (4, 172880), (5, 138304), (8, 86440), (10, 69152), (16, 43220), (20, 34576), (32, 21610), (40, 17288), (64, 10805), (80, 8644), (160, 4322), (320, 2161)]