20019447

素因数分解:

$3^3\times 7^1\times {\mathrm{73}}^1\times {\mathrm{1451}}^1$

素因数の和:1540

約数の個数: 32

約数和(自身を含む): 34383360

約数和(自身を除く): 14363913

約数列:

[1, 3, 7, 9, 21, 27, 63, 73, 189, 219, 511, 657, 1451, 1533, 1971, 4353, 4599, 10157, 13059, 13797, 30471, 39177, 91413, 105923, 274239, 317769, 741461, 953307, 2224383, 2859921, 6673149, 20019447]

約数ペア:

[(1, 20019447), (3, 6673149), (7, 2859921), (9, 2224383), (21, 953307), (27, 741461), (63, 317769), (73, 274239), (189, 105923), (219, 91413), (511, 39177), (657, 30471), (1451, 13797), (1533, 13059), (1971, 10157), (4353, 4599)]