16978585

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{283}}^1$

素因数の和:385

約数の個数: 24

約数和(自身を含む): 22451904

約数和(自身を除く): 5473319

約数列:

[1, 5, 13, 65, 71, 169, 283, 355, 845, 923, 1415, 3679, 4615, 11999, 18395, 20093, 47827, 59995, 100465, 239135, 261209, 1306045, 3395717, 16978585]

約数ペア:

[(1, 16978585), (5, 3395717), (13, 1306045), (65, 261209), (71, 239135), (169, 100465), (283, 59995), (355, 47827), (845, 20093), (923, 18395), (1415, 11999), (3679, 4615)]