21347931

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{1663}}^1$

素因数の和:2066

約数の個数: 16

約数和(自身を含む): 31150080

約数和(自身を除く): 9802149

約数列:

[1, 3, 11, 33, 389, 1167, 1663, 4279, 4989, 12837, 18293, 54879, 646907, 1940721, 7115977, 21347931]

約数ペア:

[(1, 21347931), (3, 7115977), (11, 1940721), (33, 646907), (389, 54879), (1167, 18293), (1663, 12837), (4279, 4989)]