1998900415

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{1109}}^1\times {\mathrm{18973}}^1$

素因数の和:20106

約数の個数: 16

約数和(自身を含む): 2527336800

約数和(自身を除く): 528436385

約数列:

[1, 5, 19, 95, 1109, 5545, 18973, 21071, 94865, 105355, 360487, 1802435, 21041057, 105205285, 399780083, 1998900415]

約数ペア:

[(1, 1998900415), (5, 399780083), (19, 105205285), (95, 21041057), (1109, 1802435), (5545, 360487), (18973, 105355), (21071, 94865)]