221208736

素因数分解:

$2^5\times 7^2\times {\mathrm{71}}^1\times {\mathrm{1987}}^1$

素因数の和:2082

約数の個数: 72

約数和(自身を含む): 514001376

約数和(自身を除く): 292792640

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 71, 98, 112, 142, 196, 224, 284, 392, 497, 568, 784, 994, 1136, 1568, 1987, 1988, 2272, 3479, 3974, 3976, 6958, 7948, 7952, 13909, 13916, 15896, 15904, 27818, 27832, 31792, 55636, 55664, 63584, 97363, 111272, 111328, 141077, 194726, 222544, 282154, 389452, 445088, 564308, 778904, 987539, 1128616, 1557808, 1975078, 2257232, 3115616, 3950156, 4514464, 6912773, 7900312, 13825546, 15800624, 27651092, 31601248, 55302184, 110604368, 221208736]

約数ペア:

[(1, 221208736), (2, 110604368), (4, 55302184), (7, 31601248), (8, 27651092), (14, 15800624), (16, 13825546), (28, 7900312), (32, 6912773), (49, 4514464), (56, 3950156), (71, 3115616), (98, 2257232), (112, 1975078), (142, 1557808), (196, 1128616), (224, 987539), (284, 778904), (392, 564308), (497, 445088), (568, 389452), (784, 282154), (994, 222544), (1136, 194726), (1568, 141077), (1987, 111328), (1988, 111272), (2272, 97363), (3479, 63584), (3974, 55664), (3976, 55636), (6958, 31792), (7948, 27832), (7952, 27818), (13909, 15904), (13916, 15896)]