20450859

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{193}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 34081920

約数和(自身を除く): 13631061

約数列:

[1, 3, 11, 13, 19, 33, 39, 57, 143, 169, 193, 209, 247, 429, 507, 579, 627, 741, 1859, 2123, 2509, 2717, 3211, 3667, 5577, 6369, 7527, 8151, 9633, 11001, 27599, 32617, 35321, 40337, 47671, 82797, 97851, 105963, 121011, 143013, 358787, 524381, 619723, 1076361, 1573143, 1859169, 6816953, 20450859]

約数ペア:

[(1, 20450859), (3, 6816953), (11, 1859169), (13, 1573143), (19, 1076361), (33, 619723), (39, 524381), (57, 358787), (143, 143013), (169, 121011), (193, 105963), (209, 97851), (247, 82797), (429, 47671), (507, 40337), (579, 35321), (627, 32617), (741, 27599), (1859, 11001), (2123, 9633), (2509, 8151), (2717, 7527), (3211, 6369), (3667, 5577)]