20207925

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1$

素因数の和:227

約数の個数: 72

約数和(自身を含む): 39655200

約数和(自身を除く): 19447275

約数列:

[1, 3, 5, 9, 15, 19, 25, 29, 45, 57, 75, 87, 95, 145, 163, 171, 225, 261, 285, 435, 475, 489, 551, 725, 815, 855, 1305, 1425, 1467, 1653, 2175, 2445, 2755, 3097, 4075, 4275, 4727, 4959, 6525, 7335, 8265, 9291, 12225, 13775, 14181, 15485, 23635, 24795, 27873, 36675, 41325, 42543, 46455, 70905, 77425, 89813, 118175, 123975, 139365, 212715, 232275, 269439, 354525, 449065, 696825, 808317, 1063575, 1347195, 2245325, 4041585, 6735975, 20207925]

約数ペア:

[(1, 20207925), (3, 6735975), (5, 4041585), (9, 2245325), (15, 1347195), (19, 1063575), (25, 808317), (29, 696825), (45, 449065), (57, 354525), (75, 269439), (87, 232275), (95, 212715), (145, 139365), (163, 123975), (171, 118175), (225, 89813), (261, 77425), (285, 70905), (435, 46455), (475, 42543), (489, 41325), (551, 36675), (725, 27873), (815, 24795), (855, 23635), (1305, 15485), (1425, 14181), (1467, 13775), (1653, 12225), (2175, 9291), (2445, 8265), (2755, 7335), (3097, 6525), (4075, 4959), (4275, 4727)]