20542509

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{337}}^1\times {\mathrm{521}}^1$

素因数の和:877

約数の個数: 24

約数和(自身を含む): 32111352

約数和(自身を除く): 11568843

約数列:

[1, 3, 9, 13, 39, 117, 337, 521, 1011, 1563, 3033, 4381, 4689, 6773, 13143, 20319, 39429, 60957, 175577, 526731, 1580193, 2282501, 6847503, 20542509]

約数ペア:

[(1, 20542509), (3, 6847503), (9, 2282501), (13, 1580193), (39, 526731), (117, 175577), (337, 60957), (521, 39429), (1011, 20319), (1563, 13143), (3033, 6773), (4381, 4689)]