81780517

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{19121}}^1$

素因数の和:19188

約数の個数: 16

約数和(自身を含む): 102799872

約数和(自身を除く): 21019355

約数列:

[1, 7, 13, 47, 91, 329, 611, 4277, 19121, 133847, 248573, 898687, 1740011, 6290809, 11682931, 81780517]

約数ペア:

[(1, 81780517), (7, 11682931), (13, 6290809), (47, 1740011), (91, 898687), (329, 248573), (611, 133847), (4277, 19121)]