20347778

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{40213}}^1$

素因数の和:40249

約数の個数: 16

約数和(自身を含む): 34744896

約数和(自身を除く): 14397118

約数列:

[1, 2, 11, 22, 23, 46, 253, 506, 40213, 80426, 442343, 884686, 924899, 1849798, 10173889, 20347778]

約数ペア:

[(1, 20347778), (2, 10173889), (11, 1849798), (22, 924899), (23, 884686), (46, 442343), (253, 80426), (506, 40213)]