13211505

素因数分解:

$3^4\times 5^1\times {\mathrm{32621}}^1$

素因数の和:32638

約数の個数: 20

約数和(自身を含む): 23683572

約数和(自身を除く): 10472067

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 32621, 97863, 163105, 293589, 489315, 880767, 1467945, 2642301, 4403835, 13211505]

約数ペア:

[(1, 13211505), (3, 4403835), (5, 2642301), (9, 1467945), (15, 880767), (27, 489315), (45, 293589), (81, 163105), (135, 97863), (405, 32621)]