21068047

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{1619}}^1$

素因数の和:1663

約数の個数: 24

約数和(自身を含む): 28460160

約数和(自身を除く): 7392113

約数列:

[1, 7, 11, 13, 77, 91, 143, 169, 1001, 1183, 1619, 1859, 11333, 13013, 17809, 21047, 124663, 147329, 231517, 273611, 1620619, 1915277, 3009721, 21068047]

約数ペア:

[(1, 21068047), (7, 3009721), (11, 1915277), (13, 1620619), (77, 273611), (91, 231517), (143, 147329), (169, 124663), (1001, 21047), (1183, 17809), (1619, 13013), (1859, 11333)]