20786876

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{2239}}^1$

素因数の和:2465

約数の個数: 24

約数和(自身を含む): 39889920

約数和(自身を除く): 19103044

約数列:

[1, 2, 4, 11, 22, 44, 211, 422, 844, 2239, 2321, 4478, 4642, 8956, 9284, 24629, 49258, 98516, 472429, 944858, 1889716, 5196719, 10393438, 20786876]

約数ペア:

[(1, 20786876), (2, 10393438), (4, 5196719), (11, 1889716), (22, 944858), (44, 472429), (211, 98516), (422, 49258), (844, 24629), (2239, 9284), (2321, 8956), (4478, 4642)]