17909801

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{199}}^1$

素因数の和:285

約数の個数: 32

約数和(自身を含む): 23654400

約数和(自身を除く): 5744599

約数列:

[1, 7, 13, 23, 43, 91, 161, 199, 299, 301, 559, 989, 1393, 2093, 2587, 3913, 4577, 6923, 8557, 12857, 18109, 32039, 59501, 59899, 89999, 111241, 196811, 416507, 778687, 1377677, 2558543, 17909801]

約数ペア:

[(1, 17909801), (7, 2558543), (13, 1377677), (23, 778687), (43, 416507), (91, 196811), (161, 111241), (199, 89999), (299, 59899), (301, 59501), (559, 32039), (989, 18109), (1393, 12857), (2093, 8557), (2587, 6923), (3913, 4577)]