21123711

素因数分解:

$3^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{5683}}^1$

素因数の和:5755

約数の個数: 24

約数和(自身を含む): 35468160

約数和(自身を除く): 14344449

約数列:

[1, 3, 7, 9, 21, 59, 63, 177, 413, 531, 1239, 3717, 5683, 17049, 39781, 51147, 119343, 335297, 358029, 1005891, 2347079, 3017673, 7041237, 21123711]

約数ペア:

[(1, 21123711), (3, 7041237), (7, 3017673), (9, 2347079), (21, 1005891), (59, 358029), (63, 335297), (177, 119343), (413, 51147), (531, 39781), (1239, 17049), (3717, 5683)]