81281728

素因数分解:

$2^6\times {\mathrm{11}}^1\times {\mathrm{263}}^1\times {\mathrm{439}}^1$

素因数の和:725

約数の個数: 56

約数和(自身を含む): 177027840

約数和(自身を除く): 95746112

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 176, 263, 352, 439, 526, 704, 878, 1052, 1756, 2104, 2893, 3512, 4208, 4829, 5786, 7024, 8416, 9658, 11572, 14048, 16832, 19316, 23144, 28096, 38632, 46288, 77264, 92576, 115457, 154528, 185152, 230914, 309056, 461828, 923656, 1270027, 1847312, 2540054, 3694624, 5080108, 7389248, 10160216, 20320432, 40640864, 81281728]

約数ペア:

[(1, 81281728), (2, 40640864), (4, 20320432), (8, 10160216), (11, 7389248), (16, 5080108), (22, 3694624), (32, 2540054), (44, 1847312), (64, 1270027), (88, 923656), (176, 461828), (263, 309056), (352, 230914), (439, 185152), (526, 154528), (704, 115457), (878, 92576), (1052, 77264), (1756, 46288), (2104, 38632), (2893, 28096), (3512, 23144), (4208, 19316), (4829, 16832), (5786, 14048), (7024, 11572), (8416, 9658)]