21064445

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{13043}}^1$

素因数の和:13084

約数の個数: 16

約数和(自身を含む): 28175040

約数和(自身を除く): 7110595

約数列:

[1, 5, 17, 19, 85, 95, 323, 1615, 13043, 65215, 221731, 247817, 1108655, 1239085, 4212889, 21064445]

約数ペア:

[(1, 21064445), (5, 4212889), (17, 1239085), (19, 1108655), (85, 247817), (95, 221731), (323, 65215), (1615, 13043)]