19880133

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:234

約数の個数: 48

約数和(自身を含む): 33860736

約数和(自身を除く): 13980603

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 101, 103, 147, 273, 303, 309, 637, 707, 721, 1313, 1339, 1911, 2121, 2163, 3939, 4017, 4949, 5047, 9191, 9373, 10403, 14847, 15141, 27573, 28119, 31209, 64337, 65611, 72821, 135239, 193011, 196833, 218463, 405717, 509747, 946673, 1529241, 2840019, 6626711, 19880133]

約数ペア:

[(1, 19880133), (3, 6626711), (7, 2840019), (13, 1529241), (21, 946673), (39, 509747), (49, 405717), (91, 218463), (101, 196833), (103, 193011), (147, 135239), (273, 72821), (303, 65611), (309, 64337), (637, 31209), (707, 28119), (721, 27573), (1313, 15141), (1339, 14847), (1911, 10403), (2121, 9373), (2163, 9191), (3939, 5047), (4017, 4949)]