161635825

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{571}}^1$

素因数の和:674

約数の個数: 36

約数和(自身を含む): 220657008

約数和(自身を除く): 59021183

約数列:

[1, 5, 13, 25, 65, 67, 169, 325, 335, 571, 845, 871, 1675, 2855, 4225, 4355, 7423, 11323, 14275, 21775, 37115, 38257, 56615, 96499, 185575, 191285, 283075, 482495, 497341, 956425, 2412475, 2486705, 6465433, 12433525, 32327165, 161635825]

約数ペア:

[(1, 161635825), (5, 32327165), (13, 12433525), (25, 6465433), (65, 2486705), (67, 2412475), (169, 956425), (325, 497341), (335, 482495), (571, 283075), (845, 191285), (871, 185575), (1675, 96499), (2855, 56615), (4225, 38257), (4355, 37115), (7423, 21775), (11323, 14275)]