20821298568

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{642157}}^1$

素因数の和:642366

約数の個数: 64

約数和(自身を含む): 59797752960

約数和(自身を除く): 38976454392

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 193, 386, 579, 772, 1158, 1351, 1544, 2316, 2702, 4053, 4632, 5404, 8106, 10808, 16212, 32424, 642157, 1284314, 1926471, 2568628, 3852942, 4495099, 5137256, 7705884, 8990198, 13485297, 15411768, 17980396, 26970594, 35960792, 53941188, 107882376, 123936301, 247872602, 371808903, 495745204, 743617806, 867554107, 991490408, 1487235612, 1735108214, 2602662321, 2974471224, 3470216428, 5205324642, 6940432856, 10410649284, 20821298568]

約数ペア:

[(1, 20821298568), (2, 10410649284), (3, 6940432856), (4, 5205324642), (6, 3470216428), (7, 2974471224), (8, 2602662321), (12, 1735108214), (14, 1487235612), (21, 991490408), (24, 867554107), (28, 743617806), (42, 495745204), (56, 371808903), (84, 247872602), (168, 123936301), (193, 107882376), (386, 53941188), (579, 35960792), (772, 26970594), (1158, 17980396), (1351, 15411768), (1544, 13485297), (2316, 8990198), (2702, 7705884), (4053, 5137256), (4632, 4495099), (5404, 3852942), (8106, 2568628), (10808, 1926471), (16212, 1284314), (32424, 642157)]