68340425

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{401}}^2$

素因数の和:829

約数の個数: 18

約数和(自身を含む): 89951274

約数和(自身を除く): 21610849

約数列:

[1, 5, 17, 25, 85, 401, 425, 2005, 6817, 10025, 34085, 160801, 170425, 804005, 2733617, 4020025, 13668085, 68340425]

約数ペア:

[(1, 68340425), (5, 13668085), (17, 4020025), (25, 2733617), (85, 804005), (401, 170425), (425, 160801), (2005, 34085), (6817, 10025)]