28116725

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{727}}^1$

素因数の和:774

約数の個数: 48

約数和(自身を含む): 45497088

約数和(自身を除く): 17380363

約数列:

[1, 5, 7, 13, 17, 25, 35, 65, 85, 91, 119, 175, 221, 325, 425, 455, 595, 727, 1105, 1547, 2275, 2975, 3635, 5089, 5525, 7735, 9451, 12359, 18175, 25445, 38675, 47255, 61795, 66157, 86513, 127225, 160667, 236275, 308975, 330785, 432565, 803335, 1124669, 1653925, 2162825, 4016675, 5623345, 28116725]

約数ペア:

[(1, 28116725), (5, 5623345), (7, 4016675), (13, 2162825), (17, 1653925), (25, 1124669), (35, 803335), (65, 432565), (85, 330785), (91, 308975), (119, 236275), (175, 160667), (221, 127225), (325, 86513), (425, 66157), (455, 61795), (595, 47255), (727, 38675), (1105, 25445), (1547, 18175), (2275, 12359), (2975, 9451), (3635, 7735), (5089, 5525)]