20980400

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{127}}^1$

素因数の和:211

約数の個数: 120

約数和(自身を含む): 59043840

約数和(自身を除く): 38063440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 50, 56, 59, 70, 80, 100, 112, 118, 127, 140, 175, 200, 236, 254, 280, 295, 350, 400, 413, 472, 508, 560, 590, 635, 700, 826, 889, 944, 1016, 1180, 1270, 1400, 1475, 1652, 1778, 2032, 2065, 2360, 2540, 2800, 2950, 3175, 3304, 3556, 4130, 4445, 4720, 5080, 5900, 6350, 6608, 7112, 7493, 8260, 8890, 10160, 10325, 11800, 12700, 14224, 14986, 16520, 17780, 20650, 22225, 23600, 25400, 29972, 33040, 35560, 37465, 41300, 44450, 50800, 52451, 59944, 71120, 74930, 82600, 88900, 104902, 119888, 149860, 165200, 177800, 187325, 209804, 262255, 299720, 355600, 374650, 419608, 524510, 599440, 749300, 839216, 1049020, 1311275, 1498600, 2098040, 2622550, 2997200, 4196080, 5245100, 10490200, 20980400]

約数ペア:

[(1, 20980400), (2, 10490200), (4, 5245100), (5, 4196080), (7, 2997200), (8, 2622550), (10, 2098040), (14, 1498600), (16, 1311275), (20, 1049020), (25, 839216), (28, 749300), (35, 599440), (40, 524510), (50, 419608), (56, 374650), (59, 355600), (70, 299720), (80, 262255), (100, 209804), (112, 187325), (118, 177800), (127, 165200), (140, 149860), (175, 119888), (200, 104902), (236, 88900), (254, 82600), (280, 74930), (295, 71120), (350, 59944), (400, 52451), (413, 50800), (472, 44450), (508, 41300), (560, 37465), (590, 35560), (635, 33040), (700, 29972), (826, 25400), (889, 23600), (944, 22225), (1016, 20650), (1180, 17780), (1270, 16520), (1400, 14986), (1475, 14224), (1652, 12700), (1778, 11800), (2032, 10325), (2065, 10160), (2360, 8890), (2540, 8260), (2800, 7493), (2950, 7112), (3175, 6608), (3304, 6350), (3556, 5900), (4130, 5080), (4445, 4720)]