219429

素因数分解:

$3^6\times 7^1\times {\mathrm{43}}^1$

素因数の和:68

約数の個数: 28

約数和(自身を含む): 384736

約数和(自身を除く): 165307

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 81, 129, 189, 243, 301, 387, 567, 729, 903, 1161, 1701, 2709, 3483, 5103, 8127, 10449, 24381, 31347, 73143, 219429]

約数ペア:

[(1, 219429), (3, 73143), (7, 31347), (9, 24381), (21, 10449), (27, 8127), (43, 5103), (63, 3483), (81, 2709), (129, 1701), (189, 1161), (243, 903), (301, 729), (387, 567)]