20983479

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{163}}^1$

素因数の和:307

約数の個数: 32

約数和(自身を含む): 31739904

約数和(自身を除く): 10756425

約数列:

[1, 3, 11, 33, 47, 83, 141, 163, 249, 489, 517, 913, 1551, 1793, 2739, 3901, 5379, 7661, 11703, 13529, 22983, 40587, 42911, 84271, 128733, 148819, 252813, 446457, 635863, 1907589, 6994493, 20983479]

約数ペア:

[(1, 20983479), (3, 6994493), (11, 1907589), (33, 635863), (47, 446457), (83, 252813), (141, 148819), (163, 128733), (249, 84271), (489, 42911), (517, 40587), (913, 22983), (1551, 13529), (1793, 11703), (2739, 7661), (3901, 5379)]