1978911

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{2221}}^1$

素因数の和:2244

約数の個数: 20

約数和(自身を含む): 3226344

約数和(自身を除く): 1247433

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 297, 891, 2221, 6663, 19989, 24431, 59967, 73293, 179901, 219879, 659637, 1978911]

約数ペア:

[(1, 1978911), (3, 659637), (9, 219879), (11, 179901), (27, 73293), (33, 59967), (81, 24431), (99, 19989), (297, 6663), (891, 2221)]