28688733

素因数分解:

$3^2\times {\mathrm{31}}^3\times {\mathrm{107}}^1$

素因数の和:206

約数の個数: 24

約数和(自身を含む): 43220736

約数和(自身を除く): 14532003

約数列:

[1, 3, 9, 31, 93, 107, 279, 321, 961, 963, 2883, 3317, 8649, 9951, 29791, 29853, 89373, 102827, 268119, 308481, 925443, 3187637, 9562911, 28688733]

約数ペア:

[(1, 28688733), (3, 9562911), (9, 3187637), (31, 925443), (93, 308481), (107, 268119), (279, 102827), (321, 89373), (961, 29853), (963, 29791), (2883, 9951), (3317, 8649)]