21891687

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1\times {\mathrm{761}}^1$

素因数の和:1030

約数の個数: 16

約数和(自身を含む): 30041088

約数和(自身を除く): 8149401

約数列:

[1, 3, 43, 129, 223, 669, 761, 2283, 9589, 28767, 32723, 98169, 169703, 509109, 7297229, 21891687]

約数ペア:

[(1, 21891687), (3, 7297229), (43, 509109), (129, 169703), (223, 98169), (669, 32723), (761, 28767), (2283, 9589)]