18720412

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{1051}}^1$

素因数の和:1189

約数の個数: 24

約数和(自身を含む): 33786032

約数和(自身を除く): 15065620

約数列:

[1, 2, 4, 61, 73, 122, 146, 244, 292, 1051, 2102, 4204, 4453, 8906, 17812, 64111, 76723, 128222, 153446, 256444, 306892, 4680103, 9360206, 18720412]

約数ペア:

[(1, 18720412), (2, 9360206), (4, 4680103), (61, 306892), (73, 256444), (122, 153446), (146, 128222), (244, 76723), (292, 64111), (1051, 17812), (2102, 8906), (4204, 4453)]