279995968

素因数分解:

$2^6\times 7^1\times {\mathrm{31}}^1\times {\mathrm{20161}}^1$

素因数の和:20211

約数の個数: 56

約数和(自身を含む): 655506944

約数和(自身を除く): 375510976

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 64, 112, 124, 217, 224, 248, 434, 448, 496, 868, 992, 1736, 1984, 3472, 6944, 13888, 20161, 40322, 80644, 141127, 161288, 282254, 322576, 564508, 624991, 645152, 1129016, 1249982, 1290304, 2258032, 2499964, 4374937, 4516064, 4999928, 8749874, 9032128, 9999856, 17499748, 19999712, 34999496, 39999424, 69998992, 139997984, 279995968]

約数ペア:

[(1, 279995968), (2, 139997984), (4, 69998992), (7, 39999424), (8, 34999496), (14, 19999712), (16, 17499748), (28, 9999856), (31, 9032128), (32, 8749874), (56, 4999928), (62, 4516064), (64, 4374937), (112, 2499964), (124, 2258032), (217, 1290304), (224, 1249982), (248, 1129016), (434, 645152), (448, 624991), (496, 564508), (868, 322576), (992, 282254), (1736, 161288), (1984, 141127), (3472, 80644), (6944, 40322), (13888, 20161)]