20949474

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:140

約数の個数: 128

約数和(自身を含む): 56996352

約数和(自身を除く): 36046878

約数列:

[1, 2, 3, 6, 7, 13, 14, 17, 21, 26, 34, 37, 39, 42, 51, 61, 74, 78, 91, 102, 111, 119, 122, 182, 183, 221, 222, 238, 259, 273, 357, 366, 427, 442, 481, 518, 546, 629, 663, 714, 777, 793, 854, 962, 1037, 1258, 1281, 1326, 1443, 1547, 1554, 1586, 1887, 2074, 2257, 2379, 2562, 2886, 3094, 3111, 3367, 3774, 4403, 4514, 4641, 4758, 5551, 6222, 6734, 6771, 7259, 8177, 8806, 9282, 10101, 11102, 13209, 13481, 13542, 14518, 15799, 16354, 16653, 20202, 21777, 24531, 26418, 26962, 29341, 31598, 33306, 38369, 40443, 43554, 47397, 49062, 57239, 58682, 76738, 80886, 88023, 94367, 94794, 114478, 115107, 171717, 176046, 188734, 205387, 230214, 268583, 283101, 343434, 410774, 498797, 537166, 566202, 616161, 805749, 997594, 1232322, 1496391, 1611498, 2992782, 3491579, 6983158, 10474737, 20949474]

約数ペア:

[(1, 20949474), (2, 10474737), (3, 6983158), (6, 3491579), (7, 2992782), (13, 1611498), (14, 1496391), (17, 1232322), (21, 997594), (26, 805749), (34, 616161), (37, 566202), (39, 537166), (42, 498797), (51, 410774), (61, 343434), (74, 283101), (78, 268583), (91, 230214), (102, 205387), (111, 188734), (119, 176046), (122, 171717), (182, 115107), (183, 114478), (221, 94794), (222, 94367), (238, 88023), (259, 80886), (273, 76738), (357, 58682), (366, 57239), (427, 49062), (442, 47397), (481, 43554), (518, 40443), (546, 38369), (629, 33306), (663, 31598), (714, 29341), (777, 26962), (793, 26418), (854, 24531), (962, 21777), (1037, 20202), (1258, 16653), (1281, 16354), (1326, 15799), (1443, 14518), (1547, 13542), (1554, 13481), (1586, 13209), (1887, 11102), (2074, 10101), (2257, 9282), (2379, 8806), (2562, 8177), (2886, 7259), (3094, 6771), (3111, 6734), (3367, 6222), (3774, 5551), (4403, 4758), (4514, 4641)]