13218471

素因数分解:

$3^5\times 7^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1$

素因数の和:450

約数の個数: 48

約数和(自身を含む): 23878400

約数和(自身を除く): 10659929

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 81, 133, 171, 189, 243, 399, 409, 513, 567, 1197, 1227, 1539, 1701, 2863, 3591, 3681, 4617, 7771, 8589, 10773, 11043, 23313, 25767, 32319, 33129, 54397, 69939, 77301, 99387, 163191, 209817, 231903, 489573, 629451, 695709, 1468719, 1888353, 4406157, 13218471]

約数ペア:

[(1, 13218471), (3, 4406157), (7, 1888353), (9, 1468719), (19, 695709), (21, 629451), (27, 489573), (57, 231903), (63, 209817), (81, 163191), (133, 99387), (171, 77301), (189, 69939), (243, 54397), (399, 33129), (409, 32319), (513, 25767), (567, 23313), (1197, 11043), (1227, 10773), (1539, 8589), (1701, 7771), (2863, 4617), (3591, 3681)]