256551568

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1$

素因数の和:261

約数の個数: 160

約数和(自身を含む): 655958016

約数和(自身を除く): 399406448

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 23, 26, 28, 46, 47, 52, 56, 91, 92, 94, 104, 112, 161, 163, 182, 184, 188, 208, 299, 322, 326, 329, 364, 368, 376, 598, 611, 644, 652, 658, 728, 752, 1081, 1141, 1196, 1222, 1288, 1304, 1316, 1456, 2093, 2119, 2162, 2282, 2392, 2444, 2576, 2608, 2632, 3749, 4186, 4238, 4277, 4324, 4564, 4784, 4888, 5264, 7498, 7567, 7661, 8372, 8476, 8554, 8648, 9128, 9776, 14053, 14833, 14996, 15134, 15322, 16744, 16952, 17108, 17296, 18256, 26243, 28106, 29666, 29992, 30268, 30644, 33488, 33904, 34216, 48737, 52486, 53627, 56212, 59332, 59984, 60536, 61288, 68432, 97474, 98371, 99593, 104972, 107254, 112424, 118664, 121072, 122576, 176203, 194948, 196742, 199186, 209944, 214508, 224848, 237328, 341159, 352406, 389896, 393484, 398372, 419888, 429016, 682318, 697151, 704812, 779792, 786968, 796744, 858032, 1233421, 1364636, 1394302, 1409624, 1573936, 1593488, 2290639, 2466842, 2729272, 2788604, 2819248, 4581278, 4933684, 5458544, 5577208, 9162556, 9867368, 11154416, 16034473, 18325112, 19734736, 32068946, 36650224, 64137892, 128275784, 256551568]

約数ペア:

[(1, 256551568), (2, 128275784), (4, 64137892), (7, 36650224), (8, 32068946), (13, 19734736), (14, 18325112), (16, 16034473), (23, 11154416), (26, 9867368), (28, 9162556), (46, 5577208), (47, 5458544), (52, 4933684), (56, 4581278), (91, 2819248), (92, 2788604), (94, 2729272), (104, 2466842), (112, 2290639), (161, 1593488), (163, 1573936), (182, 1409624), (184, 1394302), (188, 1364636), (208, 1233421), (299, 858032), (322, 796744), (326, 786968), (329, 779792), (364, 704812), (368, 697151), (376, 682318), (598, 429016), (611, 419888), (644, 398372), (652, 393484), (658, 389896), (728, 352406), (752, 341159), (1081, 237328), (1141, 224848), (1196, 214508), (1222, 209944), (1288, 199186), (1304, 196742), (1316, 194948), (1456, 176203), (2093, 122576), (2119, 121072), (2162, 118664), (2282, 112424), (2392, 107254), (2444, 104972), (2576, 99593), (2608, 98371), (2632, 97474), (3749, 68432), (4186, 61288), (4238, 60536), (4277, 59984), (4324, 59332), (4564, 56212), (4784, 53627), (4888, 52486), (5264, 48737), (7498, 34216), (7567, 33904), (7661, 33488), (8372, 30644), (8476, 30268), (8554, 29992), (8648, 29666), (9128, 28106), (9776, 26243), (14053, 18256), (14833, 17296), (14996, 17108), (15134, 16952), (15322, 16744)]