21288999

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{2089}}^1$

素因数の和:2214

約数の個数: 16

約数和(自身を含む): 29427200

約数和(自身を除く): 8138201

約数列:

[1, 3, 43, 79, 129, 237, 2089, 3397, 6267, 10191, 89827, 165031, 269481, 495093, 7096333, 21288999]

約数ペア:

[(1, 21288999), (3, 7096333), (43, 495093), (79, 269481), (129, 165031), (237, 89827), (2089, 10191), (3397, 6267)]