20809649

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{5641}}^1$

素因数の和:5696

約数の個数: 16

約数和(自身を含む): 25998336

約数和(自身を除く): 5188687

約数列:

[1, 7, 17, 31, 119, 217, 527, 3689, 5641, 39487, 95897, 174871, 671279, 1224097, 2972807, 20809649]

約数ペア:

[(1, 20809649), (7, 2972807), (17, 1224097), (31, 671279), (119, 174871), (217, 95897), (527, 39487), (3689, 5641)]