18669951

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{101}}^1$

素因数の和:196

約数の個数: 48

約数和(自身を含む): 30551040

約数和(自身を除く): 11881089

約数列:

[1, 3, 9, 19, 23, 47, 57, 69, 101, 141, 171, 207, 303, 423, 437, 893, 909, 1081, 1311, 1919, 2323, 2679, 3243, 3933, 4747, 5757, 6969, 8037, 9729, 14241, 17271, 20539, 20907, 42723, 44137, 61617, 90193, 109181, 132411, 184851, 270579, 327543, 397233, 811737, 982629, 2074439, 6223317, 18669951]

約数ペア:

[(1, 18669951), (3, 6223317), (9, 2074439), (19, 982629), (23, 811737), (47, 397233), (57, 327543), (69, 270579), (101, 184851), (141, 132411), (171, 109181), (207, 90193), (303, 61617), (423, 44137), (437, 42723), (893, 20907), (909, 20539), (1081, 17271), (1311, 14241), (1919, 9729), (2323, 8037), (2679, 6969), (3243, 5757), (3933, 4747)]