21568629

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1$

素因数の和:249

約数の個数: 32

約数和(自身を含む): 31610880

約数和(自身を除く): 10042251

約数列:

[1, 3, 19, 47, 57, 83, 97, 141, 249, 291, 893, 1577, 1843, 2679, 3901, 4559, 4731, 5529, 8051, 11703, 13677, 24153, 74119, 86621, 152969, 222357, 259863, 378397, 458907, 1135191, 7189543, 21568629]

約数ペア:

[(1, 21568629), (3, 7189543), (19, 1135191), (47, 458907), (57, 378397), (83, 259863), (97, 222357), (141, 152969), (249, 86621), (291, 74119), (893, 24153), (1577, 13677), (1843, 11703), (2679, 8051), (3901, 5529), (4559, 4731)]