20979994

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{48341}}^1$

素因数の和:48381

約数の個数: 16

約数和(自身を含む): 37126656

約数和(自身を除く): 16146662

約数列:

[1, 2, 7, 14, 31, 62, 217, 434, 48341, 96682, 338387, 676774, 1498571, 2997142, 10489997, 20979994]

約数ペア:

[(1, 20979994), (2, 10489997), (7, 2997142), (14, 1498571), (31, 676774), (62, 338387), (217, 96682), (434, 48341)]