21420391

素因数分解:

${\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1$

素因数の和:183

約数の個数: 24

約数和(自身を含む): 24756480

約数和(自身を除く): 3336089

約数列:

[1, 17, 19, 47, 83, 289, 323, 799, 893, 1411, 1577, 3901, 5491, 13583, 15181, 23987, 26809, 66317, 74119, 258077, 455753, 1127389, 1260023, 21420391]

約数ペア:

[(1, 21420391), (17, 1260023), (19, 1127389), (47, 455753), (83, 258077), (289, 74119), (323, 66317), (799, 26809), (893, 23987), (1411, 15181), (1577, 13583), (3901, 5491)]