21591283

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:187

約数の個数: 32

約数和(自身を含む): 27279360

約数和(自身を除く): 5688077

約数列:

[1, 7, 29, 31, 47, 73, 203, 217, 329, 511, 899, 1363, 1457, 2117, 2263, 3431, 6293, 9541, 10199, 14819, 15841, 24017, 42253, 65627, 99499, 106361, 295771, 459389, 696493, 744527, 3084469, 21591283]

約数ペア:

[(1, 21591283), (7, 3084469), (29, 744527), (31, 696493), (47, 459389), (73, 295771), (203, 106361), (217, 99499), (329, 65627), (511, 42253), (899, 24017), (1363, 15841), (1457, 14819), (2117, 10199), (2263, 9541), (3431, 6293)]