21111706

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{137089}}^1$

素因数の和:137109

約数の個数: 16

約数和(自身を含む): 39481920

約数和(自身を除く): 18370214

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 137089, 274178, 959623, 1507979, 1919246, 3015958, 10555853, 21111706]

約数ペア:

[(1, 21111706), (2, 10555853), (7, 3015958), (11, 1919246), (14, 1507979), (22, 959623), (77, 274178), (154, 137089)]