19728687

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1$

素因数の和:204

約数の個数: 48

約数和(自身を含む): 32175360

約数和(自身を除く): 12446673

約数列:

[1, 3, 11, 17, 23, 33, 51, 69, 121, 139, 187, 253, 363, 391, 417, 561, 759, 1173, 1529, 2057, 2363, 2783, 3197, 4301, 4587, 6171, 7089, 8349, 9591, 12903, 16819, 25993, 35167, 47311, 50457, 54349, 77979, 105501, 141933, 163047, 285923, 386837, 597839, 857769, 1160511, 1793517, 6576229, 19728687]

約数ペア:

[(1, 19728687), (3, 6576229), (11, 1793517), (17, 1160511), (23, 857769), (33, 597839), (51, 386837), (69, 285923), (121, 163047), (139, 141933), (187, 105501), (253, 77979), (363, 54349), (391, 50457), (417, 47311), (561, 35167), (759, 25993), (1173, 16819), (1529, 12903), (2057, 9591), (2363, 8349), (2783, 7089), (3197, 6171), (4301, 4587)]