20085261

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{709}}^1$

素因数の和:809

約数の個数: 32

約数和(自身を含む): 32716800

約数和(自身を除く): 12631539

約数列:

[1, 3, 7, 19, 21, 57, 71, 133, 213, 399, 497, 709, 1349, 1491, 2127, 4047, 4963, 9443, 13471, 14889, 28329, 40413, 50339, 94297, 151017, 282891, 352373, 956441, 1057119, 2869323, 6695087, 20085261]

約数ペア:

[(1, 20085261), (3, 6695087), (7, 2869323), (19, 1057119), (21, 956441), (57, 352373), (71, 282891), (133, 151017), (213, 94297), (399, 50339), (497, 40413), (709, 28329), (1349, 14889), (1491, 13471), (2127, 9443), (4047, 4963)]