21755331

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{61981}}^1$

素因数の和:62003

約数の個数: 16

約数和(自身を含む): 34709920

約数和(自身を除く): 12954589

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 61981, 185943, 557829, 805753, 1673487, 2417259, 7251777, 21755331]

約数ペア:

[(1, 21755331), (3, 7251777), (9, 2417259), (13, 1673487), (27, 805753), (39, 557829), (117, 185943), (351, 61981)]