20642391

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{9929}}^1$

素因数の和:9956

約数の個数: 32

約数和(自身を含む): 38131200

約数和(自身を除く): 17488809

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 99, 189, 231, 297, 693, 2079, 9929, 29787, 69503, 89361, 109219, 208509, 268083, 327657, 625527, 764533, 982971, 1876581, 2293599, 2948913, 6880797, 20642391]

約数ペア:

[(1, 20642391), (3, 6880797), (7, 2948913), (9, 2293599), (11, 1876581), (21, 982971), (27, 764533), (33, 625527), (63, 327657), (77, 268083), (99, 208509), (189, 109219), (231, 89361), (297, 69503), (693, 29787), (2079, 9929)]