20495769

素因数分解:

$3^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{2081}}^1$

素因数の和:2165

約数の個数: 24

約数和(自身を含む): 32279328

約数和(自身を除く): 11783559

約数列:

[1, 3, 7, 21, 49, 67, 147, 201, 469, 1407, 2081, 3283, 6243, 9849, 14567, 43701, 101969, 139427, 305907, 418281, 975989, 2927967, 6831923, 20495769]

約数ペア:

[(1, 20495769), (3, 6831923), (7, 2927967), (21, 975989), (49, 418281), (67, 305907), (147, 139427), (201, 101969), (469, 43701), (1407, 14567), (2081, 9849), (3283, 6243)]