21256426

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{277}}^1$

素因数の和:394

約数の個数: 32

約数和(自身を含む): 35368272

約数和(自身を除く): 14111846

約数列:

[1, 2, 17, 34, 37, 61, 74, 122, 277, 554, 629, 1037, 1258, 2074, 2257, 4514, 4709, 9418, 10249, 16897, 20498, 33794, 38369, 76738, 174233, 287249, 348466, 574498, 625189, 1250378, 10628213, 21256426]

約数ペア:

[(1, 21256426), (2, 10628213), (17, 1250378), (34, 625189), (37, 574498), (61, 348466), (74, 287249), (122, 174233), (277, 76738), (554, 38369), (629, 33794), (1037, 20498), (1258, 16897), (2074, 10249), (2257, 9418), (4514, 4709)]