199915639

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{881}}^1$

素因数の和:1327

約数の個数: 24

約数和(自身を含む): 254587536

約数和(自身を除く): 54671897

約数列:

[1, 7, 11, 49, 77, 421, 539, 881, 2947, 4631, 6167, 9691, 20629, 32417, 43169, 67837, 226919, 370901, 474859, 2596307, 4079911, 18174149, 28559377, 199915639]

約数ペア:

[(1, 199915639), (7, 28559377), (11, 18174149), (49, 4079911), (77, 2596307), (421, 474859), (539, 370901), (881, 226919), (2947, 67837), (4631, 43169), (6167, 32417), (9691, 20629)]