20285881

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{2417}}^1$

素因数の和:2544

約数の個数: 16

約数和(自身を含む): 25534080

約数和(自身を除く): 5248199

約数列:

[1, 7, 11, 77, 109, 763, 1199, 2417, 8393, 16919, 26587, 186109, 263453, 1844171, 2897983, 20285881]

約数ペア:

[(1, 20285881), (7, 2897983), (11, 1844171), (77, 263453), (109, 186109), (763, 26587), (1199, 16919), (2417, 8393)]