21909987

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{73771}}^1$

素因数の和:73791

約数の個数: 16

約数和(自身を含む): 35410560

約数和(自身を除く): 13500573

約数列:

[1, 3, 9, 11, 27, 33, 99, 297, 73771, 221313, 663939, 811481, 1991817, 2434443, 7303329, 21909987]

約数ペア:

[(1, 21909987), (3, 7303329), (9, 2434443), (11, 1991817), (27, 811481), (33, 663939), (99, 221313), (297, 73771)]