20909185

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{16529}}^1$

素因数の和:16568

約数の個数: 16

約数和(自身を含む): 28563840

約数和(自身を除く): 7654655

約数列:

[1, 5, 11, 23, 55, 115, 253, 1265, 16529, 82645, 181819, 380167, 909095, 1900835, 4181837, 20909185]

約数ペア:

[(1, 20909185), (5, 4181837), (11, 1900835), (23, 909095), (55, 380167), (115, 181819), (253, 82645), (1265, 16529)]