21071193

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{49117}}^1$

素因数の和:49144

約数の個数: 16

約数和(自身を含む): 33007296

約数和(自身を除く): 11936103

約数列:

[1, 3, 11, 13, 33, 39, 143, 429, 49117, 147351, 540287, 638521, 1620861, 1915563, 7023731, 21071193]

約数ペア:

[(1, 21071193), (3, 7023731), (11, 1915563), (13, 1620861), (33, 638521), (39, 540287), (143, 147351), (429, 49117)]