205120198912

素因数分解:

$2^8\times {\mathrm{43}}^1\times {\mathrm{1069}}^1\times {\mathrm{17431}}^1$

素因数の和:18559

約数の個数: 72

約数和(自身を含む): 419376964160

約数和(自身を除く): 214256765248

約数列:

[1, 2, 4, 8, 16, 32, 43, 64, 86, 128, 172, 256, 344, 688, 1069, 1376, 2138, 2752, 4276, 5504, 8552, 11008, 17104, 17431, 34208, 34862, 45967, 68416, 69724, 91934, 136832, 139448, 183868, 273664, 278896, 367736, 557792, 735472, 749533, 1115584, 1470944, 1499066, 2231168, 2941888, 2998132, 4462336, 5883776, 5996264, 11767552, 11992528, 18633739, 23985056, 37267478, 47970112, 74534956, 95940224, 149069912, 191880448, 298139824, 596279648, 801250777, 1192559296, 1602501554, 2385118592, 3205003108, 4770237184, 6410006216, 12820012432, 25640024864, 51280049728, 102560099456, 205120198912]

約数ペア:

[(1, 205120198912), (2, 102560099456), (4, 51280049728), (8, 25640024864), (16, 12820012432), (32, 6410006216), (43, 4770237184), (64, 3205003108), (86, 2385118592), (128, 1602501554), (172, 1192559296), (256, 801250777), (344, 596279648), (688, 298139824), (1069, 191880448), (1376, 149069912), (2138, 95940224), (2752, 74534956), (4276, 47970112), (5504, 37267478), (8552, 23985056), (11008, 18633739), (17104, 11992528), (17431, 11767552), (34208, 5996264), (34862, 5883776), (45967, 4462336), (68416, 2998132), (69724, 2941888), (91934, 2231168), (136832, 1499066), (139448, 1470944), (183868, 1115584), (273664, 749533), (278896, 735472), (367736, 557792)]