19953145

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1\times {\mathrm{431}}^1$

素因数の和:680

約数の個数: 16

約数和(自身を含む): 24634368

約数和(自身を除く): 4681223

約数列:

[1, 5, 47, 197, 235, 431, 985, 2155, 9259, 20257, 46295, 84907, 101285, 424535, 3990629, 19953145]

約数ペア:

[(1, 19953145), (5, 3990629), (47, 424535), (197, 101285), (235, 84907), (431, 46295), (985, 20257), (2155, 9259)]