18171748

素因数分解:

$2^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1$

素因数の和:209

約数の個数: 72

約数和(自身を含む): 40219200

約数和(自身を除く): 22047452

約数列:

[1, 2, 4, 7, 14, 23, 28, 29, 46, 49, 58, 92, 98, 116, 139, 161, 196, 203, 278, 322, 406, 556, 644, 667, 812, 973, 1127, 1334, 1421, 1946, 2254, 2668, 2842, 3197, 3892, 4031, 4508, 4669, 5684, 6394, 6811, 8062, 9338, 12788, 13622, 16124, 18676, 22379, 27244, 28217, 32683, 44758, 56434, 65366, 89516, 92713, 112868, 130732, 156653, 185426, 197519, 313306, 370852, 395038, 626612, 648991, 790076, 1297982, 2595964, 4542937, 9085874, 18171748]

約数ペア:

[(1, 18171748), (2, 9085874), (4, 4542937), (7, 2595964), (14, 1297982), (23, 790076), (28, 648991), (29, 626612), (46, 395038), (49, 370852), (58, 313306), (92, 197519), (98, 185426), (116, 156653), (139, 130732), (161, 112868), (196, 92713), (203, 89516), (278, 65366), (322, 56434), (406, 44758), (556, 32683), (644, 28217), (667, 27244), (812, 22379), (973, 18676), (1127, 16124), (1334, 13622), (1421, 12788), (1946, 9338), (2254, 8062), (2668, 6811), (2842, 6394), (3197, 5684), (3892, 4669), (4031, 4508)]