21658273

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^2\times {\mathrm{283}}^1$

素因数の和:361

約数の個数: 24

約数和(自身を含む): 27704768

約数和(自身を除く): 6046495

約数列:

[1, 7, 13, 29, 91, 203, 283, 377, 841, 1981, 2639, 3679, 5887, 8207, 10933, 25753, 57449, 76531, 106691, 238003, 746837, 1666021, 3094039, 21658273]

約数ペア:

[(1, 21658273), (7, 3094039), (13, 1666021), (29, 746837), (91, 238003), (203, 106691), (283, 76531), (377, 57449), (841, 25753), (1981, 10933), (2639, 8207), (3679, 5887)]