21121587

素因数分解:

$3^3\times {\mathrm{59}}^1\times {\mathrm{13259}}^1$

素因数の和:13327

約数の個数: 16

約数和(自身を含む): 31824000

約数和(自身を除く): 10702413

約数列:

[1, 3, 9, 27, 59, 177, 531, 1593, 13259, 39777, 119331, 357993, 782281, 2346843, 7040529, 21121587]

約数ペア:

[(1, 21121587), (3, 7040529), (9, 2346843), (27, 782281), (59, 357993), (177, 119331), (531, 39777), (1593, 13259)]