257204272

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{353}}^1$

素因数の和:518

約数の個数: 80

約数和(自身を含む): 560464128

約数和(自身を除く): 303259856

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 113, 124, 208, 226, 248, 353, 403, 452, 496, 706, 806, 904, 1412, 1469, 1612, 1808, 2824, 2938, 3224, 3503, 4589, 5648, 5876, 6448, 7006, 9178, 10943, 11752, 14012, 18356, 21886, 23504, 28024, 36712, 39889, 43772, 45539, 56048, 73424, 79778, 87544, 91078, 142259, 159556, 175088, 182156, 284518, 319112, 364312, 518557, 569036, 638224, 728624, 1037114, 1138072, 1236559, 2074228, 2276144, 2473118, 4148456, 4946236, 8296912, 9892472, 16075267, 19784944, 32150534, 64301068, 128602136, 257204272]

約数ペア:

[(1, 257204272), (2, 128602136), (4, 64301068), (8, 32150534), (13, 19784944), (16, 16075267), (26, 9892472), (31, 8296912), (52, 4946236), (62, 4148456), (104, 2473118), (113, 2276144), (124, 2074228), (208, 1236559), (226, 1138072), (248, 1037114), (353, 728624), (403, 638224), (452, 569036), (496, 518557), (706, 364312), (806, 319112), (904, 284518), (1412, 182156), (1469, 175088), (1612, 159556), (1808, 142259), (2824, 91078), (2938, 87544), (3224, 79778), (3503, 73424), (4589, 56048), (5648, 45539), (5876, 43772), (6448, 39889), (7006, 36712), (9178, 28024), (10943, 23504), (11752, 21886), (14012, 18356)]