20947031

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1\times {\mathrm{431}}^1$

素因数の和:622

約数の個数: 16

約数和(自身を含む): 24634368

約数和(自身を除く): 3687337

約数列:

[1, 7, 53, 131, 371, 431, 917, 3017, 6943, 22843, 48601, 56461, 159901, 395227, 2992433, 20947031]

約数ペア:

[(1, 20947031), (7, 2992433), (53, 395227), (131, 159901), (371, 56461), (431, 48601), (917, 22843), (3017, 6943)]