90838525

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{199}}^1$

素因数の和:290

約数の個数: 36

約数和(自身を含む): 123132000

約数和(自身を除く): 32293475

約数列:

[1, 5, 19, 25, 31, 95, 155, 199, 475, 589, 775, 961, 995, 2945, 3781, 4805, 4975, 6169, 14725, 18259, 18905, 24025, 30845, 91295, 94525, 117211, 154225, 191239, 456475, 586055, 956195, 2930275, 3633541, 4780975, 18167705, 90838525]

約数ペア:

[(1, 90838525), (5, 18167705), (19, 4780975), (25, 3633541), (31, 2930275), (95, 956195), (155, 586055), (199, 456475), (475, 191239), (589, 154225), (775, 117211), (961, 94525), (995, 91295), (2945, 30845), (3781, 24025), (4805, 18905), (4975, 18259), (6169, 14725)]