20409004

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:155

約数の個数: 96

約数和(自身を含む): 48254976

約数和(自身を除く): 27845972

約数列:

[1, 2, 4, 7, 11, 14, 22, 23, 28, 43, 44, 46, 67, 77, 86, 92, 134, 154, 161, 172, 253, 268, 301, 308, 322, 469, 473, 506, 602, 644, 737, 938, 946, 989, 1012, 1204, 1474, 1541, 1771, 1876, 1892, 1978, 2881, 2948, 3082, 3311, 3542, 3956, 5159, 5762, 6164, 6622, 6923, 7084, 10318, 10787, 10879, 11524, 13244, 13846, 16951, 20167, 20636, 21574, 21758, 27692, 31691, 33902, 40334, 43148, 43516, 63382, 66263, 67804, 76153, 80668, 118657, 126764, 132526, 152306, 221837, 237314, 265052, 304612, 443674, 463841, 474628, 728893, 887348, 927682, 1457786, 1855364, 2915572, 5102251, 10204502, 20409004]

約数ペア:

[(1, 20409004), (2, 10204502), (4, 5102251), (7, 2915572), (11, 1855364), (14, 1457786), (22, 927682), (23, 887348), (28, 728893), (43, 474628), (44, 463841), (46, 443674), (67, 304612), (77, 265052), (86, 237314), (92, 221837), (134, 152306), (154, 132526), (161, 126764), (172, 118657), (253, 80668), (268, 76153), (301, 67804), (308, 66263), (322, 63382), (469, 43516), (473, 43148), (506, 40334), (602, 33902), (644, 31691), (737, 27692), (938, 21758), (946, 21574), (989, 20636), (1012, 20167), (1204, 16951), (1474, 13846), (1541, 13244), (1771, 11524), (1876, 10879), (1892, 10787), (1978, 10318), (2881, 7084), (2948, 6923), (3082, 6622), (3311, 6164), (3542, 5762), (3956, 5159)]