16820667

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{223}}^1$

素因数の和:292

約数の個数: 36

約数和(自身を含む): 26819520

約数和(自身を除く): 9998853

約数列:

[1, 3, 9, 17, 29, 51, 87, 153, 223, 261, 289, 493, 669, 867, 1479, 2007, 2601, 3791, 4437, 6467, 8381, 11373, 19401, 25143, 34119, 58203, 64447, 75429, 109939, 193341, 329817, 580023, 989451, 1868963, 5606889, 16820667]

約数ペア:

[(1, 16820667), (3, 5606889), (9, 1868963), (17, 989451), (29, 580023), (51, 329817), (87, 193341), (153, 109939), (223, 75429), (261, 64447), (289, 58203), (493, 34119), (669, 25143), (867, 19401), (1479, 11373), (2007, 8381), (2601, 6467), (3791, 4437)]