20845920

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{317}}^1$

素因数の和:472

約数の個数: 96

約数和(自身を含む): 66352608

約数和(自身を除く): 45506688

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 137, 160, 240, 274, 317, 411, 480, 548, 634, 685, 822, 951, 1096, 1268, 1370, 1585, 1644, 1902, 2055, 2192, 2536, 2740, 3170, 3288, 3804, 4110, 4384, 4755, 5072, 5480, 6340, 6576, 7608, 8220, 9510, 10144, 10960, 12680, 13152, 15216, 16440, 19020, 21920, 25360, 30432, 32880, 38040, 43429, 50720, 65760, 76080, 86858, 130287, 152160, 173716, 217145, 260574, 347432, 434290, 521148, 651435, 694864, 868580, 1042296, 1302870, 1389728, 1737160, 2084592, 2605740, 3474320, 4169184, 5211480, 6948640, 10422960, 20845920]

約数ペア:

[(1, 20845920), (2, 10422960), (3, 6948640), (4, 5211480), (5, 4169184), (6, 3474320), (8, 2605740), (10, 2084592), (12, 1737160), (15, 1389728), (16, 1302870), (20, 1042296), (24, 868580), (30, 694864), (32, 651435), (40, 521148), (48, 434290), (60, 347432), (80, 260574), (96, 217145), (120, 173716), (137, 152160), (160, 130287), (240, 86858), (274, 76080), (317, 65760), (411, 50720), (480, 43429), (548, 38040), (634, 32880), (685, 30432), (822, 25360), (951, 21920), (1096, 19020), (1268, 16440), (1370, 15216), (1585, 13152), (1644, 12680), (1902, 10960), (2055, 10144), (2192, 9510), (2536, 8220), (2740, 7608), (3170, 6576), (3288, 6340), (3804, 5480), (4110, 5072), (4384, 4755)]