81264428

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{257}}^1\times {\mathrm{491}}^1$

素因数の和:782

約数の個数: 48

約数和(自身を含む): 170601984

約数和(自身を除く): 89337556

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 257, 322, 491, 514, 644, 982, 1028, 1799, 1964, 3437, 3598, 5911, 6874, 7196, 11293, 11822, 13748, 22586, 23644, 41377, 45172, 79051, 82754, 126187, 158102, 165508, 252374, 316204, 504748, 883309, 1766618, 2902301, 3533236, 5804602, 11609204, 20316107, 40632214, 81264428]

約数ペア:

[(1, 81264428), (2, 40632214), (4, 20316107), (7, 11609204), (14, 5804602), (23, 3533236), (28, 2902301), (46, 1766618), (92, 883309), (161, 504748), (257, 316204), (322, 252374), (491, 165508), (514, 158102), (644, 126187), (982, 82754), (1028, 79051), (1799, 45172), (1964, 41377), (3437, 23644), (3598, 22586), (5911, 13748), (6874, 11822), (7196, 11293)]