206349

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1$

素因数の和:77

約数の個数: 24

約数和(自身を含む): 333792

約数和(自身を除く): 127443

約数列:

[1, 3, 11, 13, 33, 37, 39, 111, 143, 169, 407, 429, 481, 507, 1221, 1443, 1859, 5291, 5577, 6253, 15873, 18759, 68783, 206349]

約数ペア:

[(1, 206349), (3, 68783), (11, 18759), (13, 15873), (33, 6253), (37, 5577), (39, 5291), (111, 1859), (143, 1443), (169, 1221), (407, 507), (429, 481)]