19860309

素因数分解:

$3^4\times 7^1\times {\mathrm{35027}}^1$

素因数の和:35046

約数の個数: 20

約数和(自身を含む): 33907104

約数和(自身を除く): 14046795

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 35027, 105081, 245189, 315243, 735567, 945729, 2206701, 2837187, 6620103, 19860309]

約数ペア:

[(1, 19860309), (3, 6620103), (7, 2837187), (9, 2206701), (21, 945729), (27, 735567), (63, 315243), (81, 245189), (189, 105081), (567, 35027)]