21903531

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{33037}}^1$

素因数の和:33070

約数の個数: 16

約数和(自身を含む): 33302304

約数和(自身を除く): 11398773

約数列:

[1, 3, 13, 17, 39, 51, 221, 663, 33037, 99111, 429481, 561629, 1288443, 1684887, 7301177, 21903531]

約数ペア:

[(1, 21903531), (3, 7301177), (13, 1684887), (17, 1288443), (39, 561629), (51, 429481), (221, 99111), (663, 33037)]