21084327

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{70991}}^1$

素因数の和:71011

約数の個数: 16

約数和(自身を含む): 34076160

約数和(自身を除く): 12991833

約数列:

[1, 3, 9, 11, 27, 33, 99, 297, 70991, 212973, 638919, 780901, 1916757, 2342703, 7028109, 21084327]

約数ペア:

[(1, 21084327), (3, 7028109), (9, 2342703), (11, 1916757), (27, 780901), (33, 638919), (99, 212973), (297, 70991)]