639353

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{263}}^1$

素因数の和:304

約数の個数: 16

約数和(自身を含む): 798336

約数和(自身を除く): 158983

約数列:

[1, 11, 13, 17, 143, 187, 221, 263, 2431, 2893, 3419, 4471, 37609, 49181, 58123, 639353]

約数ペア:

[(1, 639353), (11, 58123), (13, 49181), (17, 37609), (143, 4471), (187, 3419), (221, 2893), (263, 2431)]