19939143

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{311}}^1$

素因数の和:435

約数の個数: 32

約数和(自身を含む): 31629312

約数和(自身を除く): 11690169

約数列:

[1, 3, 7, 21, 43, 71, 129, 213, 301, 311, 497, 903, 933, 1491, 2177, 3053, 6531, 9159, 13373, 21371, 22081, 40119, 64113, 66243, 93611, 154567, 280833, 463701, 949483, 2848449, 6646381, 19939143]

約数ペア:

[(1, 19939143), (3, 6646381), (7, 2848449), (21, 949483), (43, 463701), (71, 280833), (129, 154567), (213, 93611), (301, 66243), (311, 64113), (497, 40119), (903, 22081), (933, 21371), (1491, 13373), (2177, 9159), (3053, 6531)]