21128866

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{12157}}^1$

素因数の和:12249

約数の個数: 16

約数和(自身を含む): 35015040

約数和(自身を除く): 13886174

約数列:

[1, 2, 11, 22, 79, 158, 869, 1738, 12157, 24314, 133727, 267454, 960403, 1920806, 10564433, 21128866]

約数ペア:

[(1, 21128866), (2, 10564433), (11, 1920806), (22, 960403), (79, 267454), (158, 133727), (869, 24314), (1738, 12157)]