21759035

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{431}}^1\times {\mathrm{439}}^1$

素因数の和:898

約数の個数: 16

約数和(自身を含む): 27371520

約数和(自身を除く): 5612485

約数列:

[1, 5, 23, 115, 431, 439, 2155, 2195, 9913, 10097, 49565, 50485, 189209, 946045, 4351807, 21759035]

約数ペア:

[(1, 21759035), (5, 4351807), (23, 946045), (115, 189209), (431, 50485), (439, 49565), (2155, 10097), (2195, 9913)]