257902144

素因数分解:

$2^6\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{2131}}^1$

素因数の和:2235

約数の個数: 56

約数和(自身を含む): 537195776

約数和(自身を除く): 279293632

約数列:

[1, 2, 4, 8, 16, 31, 32, 61, 62, 64, 122, 124, 244, 248, 488, 496, 976, 992, 1891, 1952, 1984, 2131, 3782, 3904, 4262, 7564, 8524, 15128, 17048, 30256, 34096, 60512, 66061, 68192, 121024, 129991, 132122, 136384, 259982, 264244, 519964, 528488, 1039928, 1056976, 2079856, 2113952, 4029721, 4159712, 4227904, 8059442, 8319424, 16118884, 32237768, 64475536, 128951072, 257902144]

約数ペア:

[(1, 257902144), (2, 128951072), (4, 64475536), (8, 32237768), (16, 16118884), (31, 8319424), (32, 8059442), (61, 4227904), (62, 4159712), (64, 4029721), (122, 2113952), (124, 2079856), (244, 1056976), (248, 1039928), (488, 528488), (496, 519964), (976, 264244), (992, 259982), (1891, 136384), (1952, 132122), (1984, 129991), (2131, 121024), (3782, 68192), (3904, 66061), (4262, 60512), (7564, 34096), (8524, 30256), (15128, 17048)]