19690785

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6163}}^1$

素因数の和:6245

約数の個数: 24

約数和(自身を含む): 34617024

約数和(自身を除く): 14926239

約数列:

[1, 3, 5, 9, 15, 45, 71, 213, 355, 639, 1065, 3195, 6163, 18489, 30815, 55467, 92445, 277335, 437573, 1312719, 2187865, 3938157, 6563595, 19690785]

約数ペア:

[(1, 19690785), (3, 6563595), (5, 3938157), (9, 2187865), (15, 1312719), (45, 437573), (71, 277335), (213, 92445), (355, 55467), (639, 30815), (1065, 18489), (3195, 6163)]