21000553203

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{751}}^1$

素因数の和:917

約数の個数: 128

約数和(自身を含む): 36540702720

約数和(自身を除く): 15540149517

約数列:

[1, 3, 7, 17, 21, 29, 37, 51, 73, 87, 111, 119, 203, 219, 259, 357, 493, 511, 609, 629, 751, 777, 1073, 1241, 1479, 1533, 1887, 2117, 2253, 2701, 3219, 3451, 3723, 4403, 5257, 6351, 7511, 8103, 8687, 10353, 12767, 13209, 14819, 15771, 18241, 18907, 21779, 22533, 26061, 27787, 35989, 38301, 44457, 45917, 54723, 54823, 56721, 65337, 78329, 83361, 89369, 107967, 127687, 137751, 152453, 164469, 194509, 234987, 251923, 268107, 321419, 370243, 383061, 383761, 457359, 472379, 548303, 583527, 755769, 805823, 931991, 964257, 1110729, 1151283, 1331593, 1417137, 1589867, 1644909, 2028451, 2417469, 2591701, 2795973, 3306653, 3994779, 4769601, 5640761, 6085353, 6523937, 7775103, 9321151, 9919959, 11129069, 13698991, 14199157, 16922283, 19571811, 27027739, 27963453, 33387207, 34483667, 41096973, 42597471, 58825079, 81083217, 95892937, 103451001, 176475237, 189194173, 241385669, 287678811, 411775553, 567582519, 724157007, 1000026343, 1235326659, 3000079029, 7000184401, 21000553203]

約数ペア:

[(1, 21000553203), (3, 7000184401), (7, 3000079029), (17, 1235326659), (21, 1000026343), (29, 724157007), (37, 567582519), (51, 411775553), (73, 287678811), (87, 241385669), (111, 189194173), (119, 176475237), (203, 103451001), (219, 95892937), (259, 81083217), (357, 58825079), (493, 42597471), (511, 41096973), (609, 34483667), (629, 33387207), (751, 27963453), (777, 27027739), (1073, 19571811), (1241, 16922283), (1479, 14199157), (1533, 13698991), (1887, 11129069), (2117, 9919959), (2253, 9321151), (2701, 7775103), (3219, 6523937), (3451, 6085353), (3723, 5640761), (4403, 4769601), (5257, 3994779), (6351, 3306653), (7511, 2795973), (8103, 2591701), (8687, 2417469), (10353, 2028451), (12767, 1644909), (13209, 1589867), (14819, 1417137), (15771, 1331593), (18241, 1151283), (18907, 1110729), (21779, 964257), (22533, 931991), (26061, 805823), (27787, 755769), (35989, 583527), (38301, 548303), (44457, 472379), (45917, 457359), (54723, 383761), (54823, 383061), (56721, 370243), (65337, 321419), (78329, 268107), (83361, 251923), (89369, 234987), (107967, 194509), (127687, 164469), (137751, 152453)]