8340425

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:233

約数の個数: 24

約数和(自身を含む): 10832640

約数和(自身を除く): 2492215

約数列:

[1, 5, 25, 41, 79, 103, 205, 395, 515, 1025, 1975, 2575, 3239, 4223, 8137, 16195, 21115, 40685, 80975, 105575, 203425, 333617, 1668085, 8340425]

約数ペア:

[(1, 8340425), (5, 1668085), (25, 333617), (41, 203425), (79, 105575), (103, 80975), (205, 40685), (395, 21115), (515, 16195), (1025, 8137), (1975, 4223), (2575, 3239)]