21081621

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{33623}}^1$

素因数の和:33656

約数の個数: 16

約数和(自身を含む): 32279040

約数和(自身を除く): 11197419

約数列:

[1, 3, 11, 19, 33, 57, 209, 627, 33623, 100869, 369853, 638837, 1109559, 1916511, 7027207, 21081621]

約数ペア:

[(1, 21081621), (3, 7027207), (11, 1916511), (19, 1109559), (33, 638837), (57, 369853), (209, 100869), (627, 33623)]