20927187

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{359}}^1$

素因数の和:512

約数の個数: 32

約数和(自身を含む): 33177600

約数和(自身を除く): 12250413

約数列:

[1, 3, 9, 17, 27, 51, 127, 153, 359, 381, 459, 1077, 1143, 2159, 3231, 3429, 6103, 6477, 9693, 18309, 19431, 45593, 54927, 58293, 136779, 164781, 410337, 775081, 1231011, 2325243, 6975729, 20927187]

約数ペア:

[(1, 20927187), (3, 6975729), (9, 2325243), (17, 1231011), (27, 775081), (51, 410337), (127, 164781), (153, 136779), (359, 58293), (381, 54927), (459, 45593), (1077, 19431), (1143, 18309), (2159, 9693), (3231, 6477), (3429, 6103)]