21905884

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{5471}}^1$

素因数の和:5506

約数の個数: 48

約数和(自身を含む): 51480576

約数和(自身を除く): 29574692

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 182, 286, 308, 364, 572, 1001, 2002, 4004, 5471, 10942, 21884, 38297, 60181, 71123, 76594, 120362, 142246, 153188, 240724, 284492, 421267, 497861, 782353, 842534, 995722, 1564706, 1685068, 1991444, 3129412, 5476471, 10952942, 21905884]

約数ペア:

[(1, 21905884), (2, 10952942), (4, 5476471), (7, 3129412), (11, 1991444), (13, 1685068), (14, 1564706), (22, 995722), (26, 842534), (28, 782353), (44, 497861), (52, 421267), (77, 284492), (91, 240724), (143, 153188), (154, 142246), (182, 120362), (286, 76594), (308, 71123), (364, 60181), (572, 38297), (1001, 21884), (2002, 10942), (4004, 5471)]