16856505

素因数分解:

$3^4\times 5^1\times {\mathrm{41621}}^1$

素因数の和:41638

約数の個数: 20

約数和(自身を含む): 30217572

約数和(自身を除く): 13361067

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 41621, 124863, 208105, 374589, 624315, 1123767, 1872945, 3371301, 5618835, 16856505]

約数ペア:

[(1, 16856505), (3, 5618835), (5, 3371301), (9, 1872945), (15, 1123767), (27, 624315), (45, 374589), (81, 208105), (135, 124863), (405, 41621)]