81701425

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 116867520

約数和(自身を除く): 35166095

約数列:

[1, 5, 13, 19, 25, 65, 95, 101, 131, 247, 325, 475, 505, 655, 1235, 1313, 1703, 1919, 2489, 2525, 3275, 6175, 6565, 8515, 9595, 12445, 13231, 24947, 32357, 32825, 42575, 47975, 62225, 66155, 124735, 161785, 172003, 251389, 330775, 623675, 808925, 860015, 1256945, 3268057, 4300075, 6284725, 16340285, 81701425]

約数ペア:

[(1, 81701425), (5, 16340285), (13, 6284725), (19, 4300075), (25, 3268057), (65, 1256945), (95, 860015), (101, 808925), (131, 623675), (247, 330775), (325, 251389), (475, 172003), (505, 161785), (655, 124735), (1235, 66155), (1313, 62225), (1703, 47975), (1919, 42575), (2489, 32825), (2525, 32357), (3275, 24947), (6175, 13231), (6565, 12445), (8515, 9595)]