20891001

素因数分解:

$3^1\times {\mathrm{107}}^1\times {\mathrm{151}}^1\times {\mathrm{431}}^1$

素因数の和:692

約数の個数: 16

約数和(自身を含む): 28366848

約数和(自身を除く): 7475847

約数列:

[1, 3, 107, 151, 321, 431, 453, 1293, 16157, 46117, 48471, 65081, 138351, 195243, 6963667, 20891001]

約数ペア:

[(1, 20891001), (3, 6963667), (107, 195243), (151, 138351), (321, 65081), (431, 48471), (453, 46117), (1293, 16157)]