16729640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{101}}^2$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 38945340

約数和(自身を除く): 22215700

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 101, 164, 202, 205, 328, 404, 410, 505, 808, 820, 1010, 1640, 2020, 4040, 4141, 8282, 10201, 16564, 20402, 20705, 33128, 40804, 41410, 51005, 81608, 82820, 102010, 165640, 204020, 408040, 418241, 836482, 1672964, 2091205, 3345928, 4182410, 8364820, 16729640]

約数ペア:

[(1, 16729640), (2, 8364820), (4, 4182410), (5, 3345928), (8, 2091205), (10, 1672964), (20, 836482), (40, 418241), (41, 408040), (82, 204020), (101, 165640), (164, 102010), (202, 82820), (205, 81608), (328, 51005), (404, 41410), (410, 40804), (505, 33128), (808, 20705), (820, 20402), (1010, 16564), (1640, 10201), (2020, 8282), (4040, 4141)]