256380416

素因数分解:

$2^9\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{557}}^1$

素因数の和:635

約数の個数: 80

約数和(自身を含む): 548000640

約数和(自身を除く): 291620224

約数列:

[1, 2, 4, 8, 16, 29, 31, 32, 58, 62, 64, 116, 124, 128, 232, 248, 256, 464, 496, 512, 557, 899, 928, 992, 1114, 1798, 1856, 1984, 2228, 3596, 3712, 3968, 4456, 7192, 7424, 7936, 8912, 14384, 14848, 15872, 16153, 17267, 17824, 28768, 32306, 34534, 35648, 57536, 64612, 69068, 71296, 115072, 129224, 138136, 142592, 230144, 258448, 276272, 285184, 460288, 500743, 516896, 552544, 1001486, 1033792, 1105088, 2002972, 2067584, 2210176, 4005944, 4135168, 4420352, 8011888, 8270336, 8840704, 16023776, 32047552, 64095104, 128190208, 256380416]

約数ペア:

[(1, 256380416), (2, 128190208), (4, 64095104), (8, 32047552), (16, 16023776), (29, 8840704), (31, 8270336), (32, 8011888), (58, 4420352), (62, 4135168), (64, 4005944), (116, 2210176), (124, 2067584), (128, 2002972), (232, 1105088), (248, 1033792), (256, 1001486), (464, 552544), (496, 516896), (512, 500743), (557, 460288), (899, 285184), (928, 276272), (992, 258448), (1114, 230144), (1798, 142592), (1856, 138136), (1984, 129224), (2228, 115072), (3596, 71296), (3712, 69068), (3968, 64612), (4456, 57536), (7192, 35648), (7424, 34534), (7936, 32306), (8912, 28768), (14384, 17824), (14848, 17267), (15872, 16153)]