205251775

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{263}}^1$

素因数の和:376

約数の個数: 48

約数和(自身を含む): 282839040

約数和(自身を除く): 77587265

約数列:

[1, 5, 19, 25, 31, 53, 95, 155, 263, 265, 475, 589, 775, 1007, 1315, 1325, 1643, 2945, 4997, 5035, 6575, 8153, 8215, 13939, 14725, 24985, 25175, 31217, 40765, 41075, 69695, 124925, 154907, 156085, 203825, 264841, 348475, 432109, 774535, 780425, 1324205, 2160545, 3872675, 6621025, 8210071, 10802725, 41050355, 205251775]

約数ペア:

[(1, 205251775), (5, 41050355), (19, 10802725), (25, 8210071), (31, 6621025), (53, 3872675), (95, 2160545), (155, 1324205), (263, 780425), (265, 774535), (475, 432109), (589, 348475), (775, 264841), (1007, 203825), (1315, 156085), (1325, 154907), (1643, 124925), (2945, 69695), (4997, 41075), (5035, 40765), (6575, 31217), (8153, 25175), (8215, 24985), (13939, 14725)]