17612721

素因数分解:

$3^4\times 7^1\times {\mathrm{31063}}^1$

素因数の和:31082

約数の個数: 20

約数和(自身を含む): 30069952

約数和(自身を除く): 12457231

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 31063, 93189, 217441, 279567, 652323, 838701, 1956969, 2516103, 5870907, 17612721]

約数ペア:

[(1, 17612721), (3, 5870907), (7, 2516103), (9, 1956969), (21, 838701), (27, 652323), (63, 279567), (81, 217441), (189, 93189), (567, 31063)]