18720585

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{10667}}^1$

素因数の和:10694

約数の個数: 32

約数和(自身を含む): 35844480

約数和(自身を除く): 17123895

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 117, 135, 195, 351, 585, 1755, 10667, 32001, 53335, 96003, 138671, 160005, 288009, 416013, 480015, 693355, 1248039, 1440045, 2080065, 3744117, 6240195, 18720585]

約数ペア:

[(1, 18720585), (3, 6240195), (5, 3744117), (9, 2080065), (13, 1440045), (15, 1248039), (27, 693355), (39, 480015), (45, 416013), (65, 288009), (117, 160005), (135, 138671), (195, 96003), (351, 53335), (585, 32001), (1755, 10667)]