20958721

素因数分解:

$7^2\times {\mathrm{619}}^1\times {\mathrm{691}}^1$

素因数の和:1324

約数の個数: 12

約数和(自身を含む): 24455280

約数和(自身を除く): 3496559

約数列:

[1, 7, 49, 619, 691, 4333, 4837, 30331, 33859, 427729, 2994103, 20958721]

約数ペア:

[(1, 20958721), (7, 2994103), (49, 427729), (619, 33859), (691, 30331), (4333, 4837)]