20949918

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{373}}^1$

素因数の和:449

約数の個数: 64

約数和(自身を含む): 49116672

約数和(自身を除く): 28166754

約数列:

[1, 2, 3, 6, 11, 22, 23, 33, 37, 46, 66, 69, 74, 111, 138, 222, 253, 373, 407, 506, 746, 759, 814, 851, 1119, 1221, 1518, 1702, 2238, 2442, 2553, 4103, 5106, 8206, 8579, 9361, 12309, 13801, 17158, 18722, 24618, 25737, 27602, 28083, 41403, 51474, 56166, 82806, 94369, 151811, 188738, 283107, 303622, 317423, 455433, 566214, 634846, 910866, 952269, 1904538, 3491653, 6983306, 10474959, 20949918]

約数ペア:

[(1, 20949918), (2, 10474959), (3, 6983306), (6, 3491653), (11, 1904538), (22, 952269), (23, 910866), (33, 634846), (37, 566214), (46, 455433), (66, 317423), (69, 303622), (74, 283107), (111, 188738), (138, 151811), (222, 94369), (253, 82806), (373, 56166), (407, 51474), (506, 41403), (746, 28083), (759, 27602), (814, 25737), (851, 24618), (1119, 18722), (1221, 17158), (1518, 13801), (1702, 12309), (2238, 9361), (2442, 8579), (2553, 8206), (4103, 5106)]