21185725

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1879}}^1$

素因数の和:1941

約数の個数: 24

約数和(自身を含む): 29373120

約数和(自身を除く): 8187395

約数列:

[1, 5, 11, 25, 41, 55, 205, 275, 451, 1025, 1879, 2255, 9395, 11275, 20669, 46975, 77039, 103345, 385195, 516725, 847429, 1925975, 4237145, 21185725]

約数ペア:

[(1, 21185725), (5, 4237145), (11, 1925975), (25, 847429), (41, 516725), (55, 385195), (205, 103345), (275, 77039), (451, 46975), (1025, 20669), (1879, 11275), (2255, 9395)]