21480927

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{11719}}^1$

素因数の和:11782

約数の個数: 16

約数和(自身を含む): 31503360

約数和(自身を除く): 10022433

約数列:

[1, 3, 13, 39, 47, 141, 611, 1833, 11719, 35157, 152347, 457041, 550793, 1652379, 7160309, 21480927]

約数ペア:

[(1, 21480927), (3, 7160309), (13, 1652379), (39, 550793), (47, 457041), (141, 152347), (611, 35157), (1833, 11719)]