16212921

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{739}}^1$

素因数の和:916

約数の個数: 16

約数和(自身を含む): 22164480

約数和(自身を除く): 5951559

約数列:

[1, 3, 71, 103, 213, 309, 739, 2217, 7313, 21939, 52469, 76117, 157407, 228351, 5404307, 16212921]

約数ペア:

[(1, 16212921), (3, 5404307), (71, 228351), (103, 157407), (213, 76117), (309, 52469), (739, 21939), (2217, 7313)]