21191907

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{5683}}^1$

素因数の和:5810

約数の個数: 16

約数和(自身を含む): 31102848

約数和(自身を除く): 9910941

約数列:

[1, 3, 11, 33, 113, 339, 1243, 3729, 5683, 17049, 62513, 187539, 642179, 1926537, 7063969, 21191907]

約数ペア:

[(1, 21191907), (3, 7063969), (11, 1926537), (33, 642179), (113, 187539), (339, 62513), (1243, 17049), (3729, 5683)]