19817109

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:179

約数の個数: 48

約数和(自身を含む): 32852160

約数和(自身を除く): 13035051

約数列:

[1, 3, 9, 13, 27, 39, 43, 101, 117, 129, 169, 303, 351, 387, 507, 559, 909, 1161, 1313, 1521, 1677, 2727, 3939, 4343, 4563, 5031, 7267, 11817, 13029, 15093, 17069, 21801, 35451, 39087, 51207, 56459, 65403, 117261, 153621, 169377, 196209, 460863, 508131, 733967, 1524393, 2201901, 6605703, 19817109]

約数ペア:

[(1, 19817109), (3, 6605703), (9, 2201901), (13, 1524393), (27, 733967), (39, 508131), (43, 460863), (101, 196209), (117, 169377), (129, 153621), (169, 117261), (303, 65403), (351, 56459), (387, 51207), (507, 39087), (559, 35451), (909, 21801), (1161, 17069), (1313, 15093), (1521, 13029), (1677, 11817), (2727, 7267), (3939, 5031), (4343, 4563)]