21452805

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2281}}^1$

素因数の和:2322

約数の個数: 48

約数和(自身を含む): 42719040

約数和(自身を除く): 21266235

約数列:

[1, 3, 5, 9, 11, 15, 19, 33, 45, 55, 57, 95, 99, 165, 171, 209, 285, 495, 627, 855, 1045, 1881, 2281, 3135, 6843, 9405, 11405, 20529, 25091, 34215, 43339, 75273, 102645, 125455, 130017, 216695, 225819, 376365, 390051, 476729, 650085, 1129095, 1430187, 1950255, 2383645, 4290561, 7150935, 21452805]

約数ペア:

[(1, 21452805), (3, 7150935), (5, 4290561), (9, 2383645), (11, 1950255), (15, 1430187), (19, 1129095), (33, 650085), (45, 476729), (55, 390051), (57, 376365), (95, 225819), (99, 216695), (165, 130017), (171, 125455), (209, 102645), (285, 75273), (495, 43339), (627, 34215), (855, 25091), (1045, 20529), (1881, 11405), (2281, 9405), (3135, 6843)]