20821658

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1549}}^1$

素因数の和:1622

約数の個数: 32

約数和(自身を含む): 37497600

約数和(自身を除く): 16675942

約数列:

[1, 2, 11, 13, 22, 26, 47, 94, 143, 286, 517, 611, 1034, 1222, 1549, 3098, 6721, 13442, 17039, 20137, 34078, 40274, 72803, 145606, 221507, 443014, 800833, 946439, 1601666, 1892878, 10410829, 20821658]

約数ペア:

[(1, 20821658), (2, 10410829), (11, 1892878), (13, 1601666), (22, 946439), (26, 800833), (47, 443014), (94, 221507), (143, 145606), (286, 72803), (517, 40274), (611, 34078), (1034, 20137), (1222, 17039), (1549, 13442), (3098, 6721)]