208465569

素因数分解:

$3^6\times {\mathrm{13}}^1\times {\mathrm{21997}}^1$

素因数の和:22028

約数の個数: 28

約数和(自身を含む): 336613396

約数和(自身を除く): 128147827

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 243, 351, 729, 1053, 3159, 9477, 21997, 65991, 197973, 285961, 593919, 857883, 1781757, 2573649, 5345271, 7720947, 16035813, 23162841, 69488523, 208465569]

約数ペア:

[(1, 208465569), (3, 69488523), (9, 23162841), (13, 16035813), (27, 7720947), (39, 5345271), (81, 2573649), (117, 1781757), (243, 857883), (351, 593919), (729, 285961), (1053, 197973), (3159, 65991), (9477, 21997)]