20986911

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{70663}}^1$

素因数の和:70683

約数の個数: 16

約数和(自身を含む): 33918720

約数和(自身を除く): 12931809

約数列:

[1, 3, 9, 11, 27, 33, 99, 297, 70663, 211989, 635967, 777293, 1907901, 2331879, 6995637, 20986911]

約数ペア:

[(1, 20986911), (3, 6995637), (9, 2331879), (11, 1907901), (27, 777293), (33, 635967), (99, 211989), (297, 70663)]