21920327

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1$

素因数の和:239

約数の個数: 32

約数和(自身を含む): 27869184

約数和(自身を除く): 5948857

約数列:

[1, 11, 13, 17, 71, 127, 143, 187, 221, 781, 923, 1207, 1397, 1651, 2159, 2431, 9017, 10153, 13277, 15691, 18161, 23749, 28067, 99187, 117221, 153289, 172601, 308737, 1289431, 1686179, 1992757, 21920327]

約数ペア:

[(1, 21920327), (11, 1992757), (13, 1686179), (17, 1289431), (71, 308737), (127, 172601), (143, 153289), (187, 117221), (221, 99187), (781, 28067), (923, 23749), (1207, 18161), (1397, 15691), (1651, 13277), (2159, 10153), (2431, 9017)]