19718332221

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{6991}}^1\times {\mathrm{7069}}^1$

素因数の和:14089

約数の個数: 32

約数和(自身を含む): 31637401600

約数和(自身を除く): 11919069379

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 6991, 7069, 20973, 21207, 48937, 49483, 132829, 134311, 146811, 148449, 398487, 402933, 929803, 940177, 2789409, 2820531, 49419379, 148258137, 345935653, 938968201, 1037806959, 2816904603, 6572777407, 19718332221]

約数ペア:

[(1, 19718332221), (3, 6572777407), (7, 2816904603), (19, 1037806959), (21, 938968201), (57, 345935653), (133, 148258137), (399, 49419379), (6991, 2820531), (7069, 2789409), (20973, 940177), (21207, 929803), (48937, 402933), (49483, 398487), (132829, 148449), (134311, 146811)]