21153231

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{23741}}^1$

素因数の和:23764

約数の個数: 20

約数和(自身を含む): 34473384

約数和(自身を除く): 13320153

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 297, 891, 23741, 71223, 213669, 261151, 641007, 783453, 1923021, 2350359, 7051077, 21153231]

約数ペア:

[(1, 21153231), (3, 7051077), (9, 2350359), (11, 1923021), (27, 783453), (33, 641007), (81, 261151), (99, 213669), (297, 71223), (891, 23741)]