20519213

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:185

約数の個数: 32

約数和(自身を含む): 25546752

約数和(自身を除く): 5027539

約数列:

[1, 11, 13, 43, 47, 71, 143, 473, 517, 559, 611, 781, 923, 2021, 3053, 3337, 6149, 6721, 10153, 22231, 26273, 33583, 36707, 39689, 43381, 143491, 289003, 436579, 477191, 1578401, 1865383, 20519213]

約数ペア:

[(1, 20519213), (11, 1865383), (13, 1578401), (43, 477191), (47, 436579), (71, 289003), (143, 143491), (473, 43381), (517, 39689), (559, 36707), (611, 33583), (781, 26273), (923, 22231), (2021, 10153), (3053, 6721), (3337, 6149)]