19911782

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{17077}}^1$

素因数の和:17143

約数の個数: 16

約数和(自身を含む): 33199632

約数和(自身を除く): 13287850

約数列:

[1, 2, 11, 22, 53, 106, 583, 1166, 17077, 34154, 187847, 375694, 905081, 1810162, 9955891, 19911782]

約数ペア:

[(1, 19911782), (2, 9955891), (11, 1810162), (22, 905081), (53, 375694), (106, 187847), (583, 34154), (1166, 17077)]