20856500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{59}}^1\times {\mathrm{101}}^1$

素因数の和:186

約数の個数: 96

約数和(自身を含む): 53464320

約数和(自身を除く): 32607820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 59, 70, 100, 101, 118, 125, 140, 175, 202, 236, 250, 295, 350, 404, 413, 500, 505, 590, 700, 707, 826, 875, 1010, 1180, 1414, 1475, 1652, 1750, 2020, 2065, 2525, 2828, 2950, 3500, 3535, 4130, 5050, 5900, 5959, 7070, 7375, 8260, 10100, 10325, 11918, 12625, 14140, 14750, 17675, 20650, 23836, 25250, 29500, 29795, 35350, 41300, 41713, 50500, 51625, 59590, 70700, 83426, 88375, 103250, 119180, 148975, 166852, 176750, 206500, 208565, 297950, 353500, 417130, 595900, 744875, 834260, 1042825, 1489750, 2085650, 2979500, 4171300, 5214125, 10428250, 20856500]

約数ペア:

[(1, 20856500), (2, 10428250), (4, 5214125), (5, 4171300), (7, 2979500), (10, 2085650), (14, 1489750), (20, 1042825), (25, 834260), (28, 744875), (35, 595900), (50, 417130), (59, 353500), (70, 297950), (100, 208565), (101, 206500), (118, 176750), (125, 166852), (140, 148975), (175, 119180), (202, 103250), (236, 88375), (250, 83426), (295, 70700), (350, 59590), (404, 51625), (413, 50500), (500, 41713), (505, 41300), (590, 35350), (700, 29795), (707, 29500), (826, 25250), (875, 23836), (1010, 20650), (1180, 17675), (1414, 14750), (1475, 14140), (1652, 12625), (1750, 11918), (2020, 10325), (2065, 10100), (2525, 8260), (2828, 7375), (2950, 7070), (3500, 5959), (3535, 5900), (4130, 5050)]