19808961

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{233}}^1\times {\mathrm{1667}}^1$

素因数の和:1920

約数の個数: 16

約数和(自身を含む): 28102464

約数和(自身を除く): 8293503

約数列:

[1, 3, 17, 51, 233, 699, 1667, 3961, 5001, 11883, 28339, 85017, 388411, 1165233, 6602987, 19808961]

約数ペア:

[(1, 19808961), (3, 6602987), (17, 1165233), (51, 388411), (233, 85017), (699, 28339), (1667, 11883), (3961, 5001)]