20674521

素因数分解:

$3^4\times 7^2\times {\mathrm{5209}}^1$

素因数の和:5235

約数の個数: 30

約数和(自身を含む): 35933370

約数和(自身を除く): 15258849

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323, 3969, 5209, 15627, 36463, 46881, 109389, 140643, 255241, 328167, 421929, 765723, 984501, 2297169, 2953503, 6891507, 20674521]

約数ペア:

[(1, 20674521), (3, 6891507), (7, 2953503), (9, 2297169), (21, 984501), (27, 765723), (49, 421929), (63, 328167), (81, 255241), (147, 140643), (189, 109389), (441, 46881), (567, 36463), (1323, 15627), (3969, 5209)]