19217401

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{691}}^1$

素因数の和:864

約数の個数: 16

約数和(自身を含む): 22919040

約数和(自身を除く): 3701639

約数列:

[1, 7, 29, 137, 203, 691, 959, 3973, 4837, 20039, 27811, 94667, 140273, 662669, 2745343, 19217401]

約数ペア:

[(1, 19217401), (7, 2745343), (29, 662669), (137, 140273), (203, 94667), (691, 27811), (959, 20039), (3973, 4837)]