21053984

素因数分解:

$2^5\times 7^1\times {\mathrm{193}}^1\times {\mathrm{487}}^1$

素因数の和:697

約数の個数: 48

約数和(自身を含む): 47714688

約数和(自身を除く): 26660704

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 193, 224, 386, 487, 772, 974, 1351, 1544, 1948, 2702, 3088, 3409, 3896, 5404, 6176, 6818, 7792, 10808, 13636, 15584, 21616, 27272, 43232, 54544, 93991, 109088, 187982, 375964, 657937, 751928, 1315874, 1503856, 2631748, 3007712, 5263496, 10526992, 21053984]

約数ペア:

[(1, 21053984), (2, 10526992), (4, 5263496), (7, 3007712), (8, 2631748), (14, 1503856), (16, 1315874), (28, 751928), (32, 657937), (56, 375964), (112, 187982), (193, 109088), (224, 93991), (386, 54544), (487, 43232), (772, 27272), (974, 21616), (1351, 15584), (1544, 13636), (1948, 10808), (2702, 7792), (3088, 6818), (3409, 6176), (3896, 5404)]