81141344

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{541}}^1$

素因数の和:703

約数の個数: 48

約数和(自身を含む): 165266640

約数和(自身を除く): 84125296

約数列:

[1, 2, 4, 8, 16, 32, 43, 86, 109, 172, 218, 344, 436, 541, 688, 872, 1082, 1376, 1744, 2164, 3488, 4328, 4687, 8656, 9374, 17312, 18748, 23263, 37496, 46526, 58969, 74992, 93052, 117938, 149984, 186104, 235876, 372208, 471752, 744416, 943504, 1887008, 2535667, 5071334, 10142668, 20285336, 40570672, 81141344]

約数ペア:

[(1, 81141344), (2, 40570672), (4, 20285336), (8, 10142668), (16, 5071334), (32, 2535667), (43, 1887008), (86, 943504), (109, 744416), (172, 471752), (218, 372208), (344, 235876), (436, 186104), (541, 149984), (688, 117938), (872, 93052), (1082, 74992), (1376, 58969), (1744, 46526), (2164, 37496), (3488, 23263), (4328, 18748), (4687, 17312), (8656, 9374)]