20640774

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1039}}^1$

素因数の和:1105

約数の個数: 64

約数和(自身を含む): 52715520

約数和(自身を除く): 32074746

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 43, 66, 77, 86, 129, 154, 231, 258, 301, 462, 473, 602, 903, 946, 1039, 1419, 1806, 2078, 2838, 3117, 3311, 6234, 6622, 7273, 9933, 11429, 14546, 19866, 21819, 22858, 34287, 43638, 44677, 68574, 80003, 89354, 134031, 160006, 240009, 268062, 312739, 480018, 491447, 625478, 938217, 982894, 1474341, 1876434, 2948682, 3440129, 6880258, 10320387, 20640774]

約数ペア:

[(1, 20640774), (2, 10320387), (3, 6880258), (6, 3440129), (7, 2948682), (11, 1876434), (14, 1474341), (21, 982894), (22, 938217), (33, 625478), (42, 491447), (43, 480018), (66, 312739), (77, 268062), (86, 240009), (129, 160006), (154, 134031), (231, 89354), (258, 80003), (301, 68574), (462, 44677), (473, 43638), (602, 34287), (903, 22858), (946, 21819), (1039, 19866), (1419, 14546), (1806, 11429), (2078, 9933), (2838, 7273), (3117, 6622), (3311, 6234)]