21509709

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{32443}}^1$

素因数の和:32476

約数の個数: 16

約数和(自身を含む): 32703552

約数和(自身を除く): 11193843

約数列:

[1, 3, 13, 17, 39, 51, 221, 663, 32443, 97329, 421759, 551531, 1265277, 1654593, 7169903, 21509709]

約数ペア:

[(1, 21509709), (3, 7169903), (13, 1654593), (17, 1265277), (39, 551531), (51, 421759), (221, 97329), (663, 32443)]