81291205

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{5443}}^1$

素因数の和:5580

約数の個数: 16

約数和(自身を含む): 101911680

約数和(自身を除く): 20620475

約数列:

[1, 5, 29, 103, 145, 515, 2987, 5443, 14935, 27215, 157847, 560629, 789235, 2803145, 16258241, 81291205]

約数ペア:

[(1, 81291205), (5, 16258241), (29, 2803145), (103, 789235), (145, 560629), (515, 157847), (2987, 27215), (5443, 14935)]