21359259

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{1019}}^1$

素因数の和:1179

約数の個数: 24

約数和(自身を含む): 32937840

約数和(自身を除く): 11578581

約数列:

[1, 3, 9, 17, 51, 137, 153, 411, 1019, 1233, 2329, 3057, 6987, 9171, 17323, 20961, 51969, 139603, 155907, 418809, 1256427, 2373251, 7119753, 21359259]

約数ペア:

[(1, 21359259), (3, 7119753), (9, 2373251), (17, 1256427), (51, 418809), (137, 155907), (153, 139603), (411, 51969), (1019, 20961), (1233, 17323), (2329, 9171), (3057, 6987)]