217393561

素因数分解:

$7^1\times {\mathrm{11}}^3\times {\mathrm{23333}}^1$

素因数の和:23373

約数の個数: 16

約数和(自身を含む): 273287808

約数和(自身を除く): 55894247

約数列:

[1, 7, 11, 77, 121, 847, 1331, 9317, 23333, 163331, 256663, 1796641, 2823293, 19763051, 31056223, 217393561]

約数ペア:

[(1, 217393561), (7, 31056223), (11, 19763051), (77, 2823293), (121, 1796641), (847, 256663), (1331, 163331), (9317, 23333)]