20865922

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:223

約数の個数: 64

約数和(自身を含む): 41969664

約数和(自身を除く): 21103742

約数列:

[1, 2, 7, 11, 14, 22, 23, 43, 46, 77, 86, 137, 154, 161, 253, 274, 301, 322, 473, 506, 602, 946, 959, 989, 1507, 1771, 1918, 1978, 3014, 3151, 3311, 3542, 5891, 6302, 6622, 6923, 10549, 10879, 11782, 13846, 21098, 21758, 22057, 34661, 41237, 44114, 64801, 69322, 76153, 82474, 129602, 135493, 152306, 242627, 270986, 453607, 485254, 907214, 948451, 1490423, 1896902, 2980846, 10432961, 20865922]

約数ペア:

[(1, 20865922), (2, 10432961), (7, 2980846), (11, 1896902), (14, 1490423), (22, 948451), (23, 907214), (43, 485254), (46, 453607), (77, 270986), (86, 242627), (137, 152306), (154, 135493), (161, 129602), (253, 82474), (274, 76153), (301, 69322), (322, 64801), (473, 44114), (506, 41237), (602, 34661), (946, 22057), (959, 21758), (989, 21098), (1507, 13846), (1771, 11782), (1918, 10879), (1978, 10549), (3014, 6923), (3151, 6622), (3311, 6302), (3542, 5891)]