21521538

素因数分解:

$2^1\times 3^6\times {\mathrm{29}}^1\times {\mathrm{509}}^1$

素因数の和:558

約数の個数: 56

約数和(自身を含む): 50168700

約数和(自身を除く): 28647162

約数列:

[1, 2, 3, 6, 9, 18, 27, 29, 54, 58, 81, 87, 162, 174, 243, 261, 486, 509, 522, 729, 783, 1018, 1458, 1527, 1566, 2349, 3054, 4581, 4698, 7047, 9162, 13743, 14094, 14761, 21141, 27486, 29522, 41229, 42282, 44283, 82458, 88566, 123687, 132849, 247374, 265698, 371061, 398547, 742122, 797094, 1195641, 2391282, 3586923, 7173846, 10760769, 21521538]

約数ペア:

[(1, 21521538), (2, 10760769), (3, 7173846), (6, 3586923), (9, 2391282), (18, 1195641), (27, 797094), (29, 742122), (54, 398547), (58, 371061), (81, 265698), (87, 247374), (162, 132849), (174, 123687), (243, 88566), (261, 82458), (486, 44283), (509, 42282), (522, 41229), (729, 29522), (783, 27486), (1018, 21141), (1458, 14761), (1527, 14094), (1566, 13743), (2349, 9162), (3054, 7047), (4581, 4698)]