266721

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{977}}^1$

素因数の和:1000

約数の個数: 16

約数和(自身を含む): 438144

約数和(自身を除く): 171423

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 977, 2931, 6839, 12701, 20517, 38103, 88907, 266721]

約数ペア:

[(1, 266721), (3, 88907), (7, 38103), (13, 20517), (21, 12701), (39, 6839), (91, 2931), (273, 977)]