20777211

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1103}}^1$

素因数の和:1152

約数の個数: 48

約数和(自身を含む): 38578176

約数和(自身を除く): 17800965

約数列:

[1, 3, 7, 9, 13, 21, 23, 39, 63, 69, 91, 117, 161, 207, 273, 299, 483, 819, 897, 1103, 1449, 2093, 2691, 3309, 6279, 7721, 9927, 14339, 18837, 23163, 25369, 43017, 69489, 76107, 100373, 129051, 177583, 228321, 301119, 329797, 532749, 903357, 989391, 1598247, 2308579, 2968173, 6925737, 20777211]

約数ペア:

[(1, 20777211), (3, 6925737), (7, 2968173), (9, 2308579), (13, 1598247), (21, 989391), (23, 903357), (39, 532749), (63, 329797), (69, 301119), (91, 228321), (117, 177583), (161, 129051), (207, 100373), (273, 76107), (299, 69489), (483, 43017), (819, 25369), (897, 23163), (1103, 18837), (1449, 14339), (2093, 9927), (2691, 7721), (3309, 6279)]