20356721

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{463}}^1\times {\mathrm{571}}^1$

素因数の和:1052

約数の個数: 16

約数和(自身を含む): 25479168

約数和(自身を除く): 5122447

約数列:

[1, 7, 11, 77, 463, 571, 3241, 3997, 5093, 6281, 35651, 43967, 264373, 1850611, 2908103, 20356721]

約数ペア:

[(1, 20356721), (7, 2908103), (11, 1850611), (77, 264373), (463, 43967), (571, 35651), (3241, 6281), (3997, 5093)]