20819169

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{2777}}^1$

素因数の和:2814

約数の個数: 36

約数和(自身を含む): 37052964

約数和(自身を除く): 16233795

約数列:

[1, 3, 7, 9, 17, 21, 49, 51, 63, 119, 147, 153, 357, 441, 833, 1071, 2499, 2777, 7497, 8331, 19439, 24993, 47209, 58317, 136073, 141627, 174951, 330463, 408219, 424881, 991389, 1224657, 2313241, 2974167, 6939723, 20819169]

約数ペア:

[(1, 20819169), (3, 6939723), (7, 2974167), (9, 2313241), (17, 1224657), (21, 991389), (49, 424881), (51, 408219), (63, 330463), (119, 174951), (147, 141627), (153, 136073), (357, 58317), (441, 47209), (833, 24993), (1071, 19439), (2499, 8331), (2777, 7497)]