561681

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{293}}^1$

素因数の和:373

約数の個数: 16

約数和(自身を含む): 846720

約数和(自身を除く): 285039

約数列:

[1, 3, 9, 27, 71, 213, 293, 639, 879, 1917, 2637, 7911, 20803, 62409, 187227, 561681]

約数ペア:

[(1, 561681), (3, 187227), (9, 62409), (27, 20803), (71, 7911), (213, 2637), (293, 1917), (639, 879)]