21085790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{191689}}^1$

素因数の和:191707

約数の個数: 16

約数和(自身を含む): 41405040

約数和(自身を除く): 20319250

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 191689, 383378, 958445, 1916890, 2108579, 4217158, 10542895, 21085790]

約数ペア:

[(1, 21085790), (2, 10542895), (5, 4217158), (10, 2108579), (11, 1916890), (22, 958445), (55, 383378), (110, 191689)]