217876959

素因数分解:

$3^6\times {\mathrm{31}}^2\times {\mathrm{311}}^1$

素因数の和:391

約数の個数: 42

約数和(自身を含む): 338628888

約数和(自身を除く): 120751929

約数列:

[1, 3, 9, 27, 31, 81, 93, 243, 279, 311, 729, 837, 933, 961, 2511, 2799, 2883, 7533, 8397, 8649, 9641, 22599, 25191, 25947, 28923, 75573, 77841, 86769, 226719, 233523, 260307, 298871, 700569, 780921, 896613, 2342763, 2689839, 7028289, 8069517, 24208551, 72625653, 217876959]

約数ペア:

[(1, 217876959), (3, 72625653), (9, 24208551), (27, 8069517), (31, 7028289), (81, 2689839), (93, 2342763), (243, 896613), (279, 780921), (311, 700569), (729, 298871), (837, 260307), (933, 233523), (961, 226719), (2511, 86769), (2799, 77841), (2883, 75573), (7533, 28923), (8397, 25947), (8649, 25191), (9641, 22599)]