20912104

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:170

約数の個数: 64

約数和(自身を含む): 43338240

約数和(自身を除く): 22426136

約数列:

[1, 2, 4, 8, 31, 37, 43, 53, 62, 74, 86, 106, 124, 148, 172, 212, 248, 296, 344, 424, 1147, 1333, 1591, 1643, 1961, 2279, 2294, 2666, 3182, 3286, 3922, 4558, 4588, 5332, 6364, 6572, 7844, 9116, 9176, 10664, 12728, 13144, 15688, 18232, 49321, 60791, 70649, 84323, 98642, 121582, 141298, 168646, 197284, 243164, 282596, 337292, 394568, 486328, 565192, 674584, 2614013, 5228026, 10456052, 20912104]

約数ペア:

[(1, 20912104), (2, 10456052), (4, 5228026), (8, 2614013), (31, 674584), (37, 565192), (43, 486328), (53, 394568), (62, 337292), (74, 282596), (86, 243164), (106, 197284), (124, 168646), (148, 141298), (172, 121582), (212, 98642), (248, 84323), (296, 70649), (344, 60791), (424, 49321), (1147, 18232), (1333, 15688), (1591, 13144), (1643, 12728), (1961, 10664), (2279, 9176), (2294, 9116), (2666, 7844), (3182, 6572), (3286, 6364), (3922, 5332), (4558, 4588)]