21355588

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{197}}^1\times {\mathrm{661}}^1$

素因数の和:903

約数の個数: 24

約数和(自身を含む): 38536344

約数和(自身を除く): 17180756

約数列:

[1, 2, 4, 41, 82, 164, 197, 394, 661, 788, 1322, 2644, 8077, 16154, 27101, 32308, 54202, 108404, 130217, 260434, 520868, 5338897, 10677794, 21355588]

約数ペア:

[(1, 21355588), (2, 10677794), (4, 5338897), (41, 520868), (82, 260434), (164, 130217), (197, 108404), (394, 54202), (661, 32308), (788, 27101), (1322, 16154), (2644, 8077)]