257590984

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{4651}}^1$

素因数の和:4730

約数の個数: 64

約数和(自身を含む): 589501440

約数和(自身を除く): 331910456

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 43, 46, 56, 86, 92, 161, 172, 184, 301, 322, 344, 602, 644, 989, 1204, 1288, 1978, 2408, 3956, 4651, 6923, 7912, 9302, 13846, 18604, 27692, 32557, 37208, 55384, 65114, 106973, 130228, 199993, 213946, 260456, 399986, 427892, 748811, 799972, 855784, 1399951, 1497622, 1599944, 2799902, 2995244, 4599839, 5599804, 5990488, 9199678, 11199608, 18399356, 32198873, 36798712, 64397746, 128795492, 257590984]

約数ペア:

[(1, 257590984), (2, 128795492), (4, 64397746), (7, 36798712), (8, 32198873), (14, 18399356), (23, 11199608), (28, 9199678), (43, 5990488), (46, 5599804), (56, 4599839), (86, 2995244), (92, 2799902), (161, 1599944), (172, 1497622), (184, 1399951), (301, 855784), (322, 799972), (344, 748811), (602, 427892), (644, 399986), (989, 260456), (1204, 213946), (1288, 199993), (1978, 130228), (2408, 106973), (3956, 65114), (4651, 55384), (6923, 37208), (7912, 32557), (9302, 27692), (13846, 18604)]