21696987

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{7621}}^1$

素因数の和:7710

約数の個数: 16

約数和(自身を含む): 31585568

約数和(自身を除く): 9888581

約数列:

[1, 3, 13, 39, 73, 219, 949, 2847, 7621, 22863, 99073, 297219, 556333, 1668999, 7232329, 21696987]

約数ペア:

[(1, 21696987), (3, 7232329), (13, 1668999), (39, 556333), (73, 297219), (219, 99073), (949, 22863), (2847, 7621)]