19498479

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1$

素因数の和:228

約数の個数: 64

約数和(自身を含む): 35954688

約数和(自身を除く): 16456209

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 43, 77, 91, 129, 143, 151, 231, 273, 301, 429, 453, 473, 559, 903, 1001, 1057, 1419, 1661, 1677, 1963, 3003, 3171, 3311, 3913, 4983, 5889, 6149, 6493, 9933, 11627, 11739, 13741, 18447, 19479, 21593, 34881, 41223, 43043, 45451, 64779, 71423, 84409, 129129, 136353, 151151, 214269, 253227, 453453, 499961, 590863, 928499, 1499883, 1772589, 2785497, 6499493, 19498479]

約数ペア:

[(1, 19498479), (3, 6499493), (7, 2785497), (11, 1772589), (13, 1499883), (21, 928499), (33, 590863), (39, 499961), (43, 453453), (77, 253227), (91, 214269), (129, 151151), (143, 136353), (151, 129129), (231, 84409), (273, 71423), (301, 64779), (429, 45451), (453, 43043), (473, 41223), (559, 34881), (903, 21593), (1001, 19479), (1057, 18447), (1419, 13741), (1661, 11739), (1677, 11627), (1963, 9933), (3003, 6493), (3171, 6149), (3311, 5889), (3913, 4983)]