21284181

素因数分解:

$3^3\times {\mathrm{61}}^1\times {\mathrm{12923}}^1$

素因数の和:12993

約数の個数: 16

約数和(自身を含む): 32051520

約数和(自身を除く): 10767339

約数列:

[1, 3, 9, 27, 61, 183, 549, 1647, 12923, 38769, 116307, 348921, 788303, 2364909, 7094727, 21284181]

約数ペア:

[(1, 21284181), (3, 7094727), (9, 2364909), (27, 788303), (61, 348921), (183, 116307), (549, 38769), (1647, 12923)]