28705655

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{7351}}^1$

素因数の和:7438

約数の個数: 16

約数和(自身を含む): 38112768

約数和(自身を除く): 9407113

約数列:

[1, 5, 11, 55, 71, 355, 781, 3905, 7351, 36755, 80861, 404305, 521921, 2609605, 5741131, 28705655]

約数ペア:

[(1, 28705655), (5, 5741131), (11, 2609605), (55, 521921), (71, 404305), (355, 80861), (781, 36755), (3905, 7351)]