87561

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:82

約数の個数: 20

約数和(自身を含む): 139392

約数和(自身を除く): 51831

約数列:

[1, 3, 9, 23, 27, 47, 69, 81, 141, 207, 423, 621, 1081, 1269, 1863, 3243, 3807, 9729, 29187, 87561]

約数ペア:

[(1, 87561), (3, 29187), (9, 9729), (23, 3807), (27, 3243), (47, 1863), (69, 1269), (81, 1081), (141, 621), (207, 423)]