21368919

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{49811}}^1$

素因数の和:49838

約数の個数: 16

約数和(自身を含む): 33473664

約数和(自身を除く): 12104745

約数列:

[1, 3, 11, 13, 33, 39, 143, 429, 49811, 149433, 547921, 647543, 1643763, 1942629, 7122973, 21368919]

約数ペア:

[(1, 21368919), (3, 7122973), (11, 1942629), (13, 1643763), (33, 647543), (39, 547921), (143, 149433), (429, 49811)]