81128788

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{2791}}^1$

素因数の和:2864

約数の個数: 36

約数和(自身を含む): 157368288

約数和(自身を除く): 76239500

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 169, 172, 338, 559, 676, 1118, 2236, 2791, 5582, 7267, 11164, 14534, 29068, 36283, 72566, 120013, 145132, 240026, 471679, 480052, 943358, 1560169, 1886716, 3120338, 6240676, 20282197, 40564394, 81128788]

約数ペア:

[(1, 81128788), (2, 40564394), (4, 20282197), (13, 6240676), (26, 3120338), (43, 1886716), (52, 1560169), (86, 943358), (169, 480052), (172, 471679), (338, 240026), (559, 145132), (676, 120013), (1118, 72566), (2236, 36283), (2791, 29068), (5582, 14534), (7267, 11164)]