20211081

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{157}}^1$

素因数の和:301

約数の個数: 32

約数和(自身を含む): 30578688

約数和(自身を除く): 10367607

約数列:

[1, 3, 11, 33, 47, 83, 141, 157, 249, 471, 517, 913, 1551, 1727, 2739, 3901, 5181, 7379, 11703, 13031, 22137, 39093, 42911, 81169, 128733, 143341, 243507, 430023, 612457, 1837371, 6737027, 20211081]

約数ペア:

[(1, 20211081), (3, 6737027), (11, 1837371), (33, 612457), (47, 430023), (83, 243507), (141, 143341), (157, 128733), (249, 81169), (471, 42911), (517, 39093), (913, 22137), (1551, 13031), (1727, 11703), (2739, 7379), (3901, 5181)]