21228681

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{2843}}^1$

素因数の和:2996

約数の個数: 16

約数和(自身を含む): 30032640

約数和(自身を除く): 8803959

約数列:

[1, 3, 19, 57, 131, 393, 2489, 2843, 7467, 8529, 54017, 162051, 372433, 1117299, 7076227, 21228681]

約数ペア:

[(1, 21228681), (3, 7076227), (19, 1117299), (57, 372433), (131, 162051), (393, 54017), (2489, 8529), (2843, 7467)]