20997548

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{36709}}^1$

素因数の和:36737

約数の個数: 24

約数和(自身を含む): 43170960

約数和(自身を除く): 22173412

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 143, 286, 572, 36709, 73418, 146836, 403799, 477217, 807598, 954434, 1615196, 1908868, 5249387, 10498774, 20997548]

約数ペア:

[(1, 20997548), (2, 10498774), (4, 5249387), (11, 1908868), (13, 1615196), (22, 954434), (26, 807598), (44, 477217), (52, 403799), (143, 146836), (286, 73418), (572, 36709)]