21327163

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{283}}^1$

素因数の和:355

約数の個数: 32

約数和(自身を含む): 27482112

約数和(自身を除く): 6154949

約数列:

[1, 11, 13, 17, 31, 143, 187, 221, 283, 341, 403, 527, 2431, 3113, 3679, 4433, 4811, 5797, 6851, 8773, 40469, 52921, 62543, 75361, 96503, 114049, 149141, 687973, 1254539, 1640551, 1938833, 21327163]

約数ペア:

[(1, 21327163), (11, 1938833), (13, 1640551), (17, 1254539), (31, 687973), (143, 149141), (187, 114049), (221, 96503), (283, 75361), (341, 62543), (403, 52921), (527, 40469), (2431, 8773), (3113, 6851), (3679, 5797), (4433, 4811)]