20646175

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{389}}^1$

素因数の和:603

約数の個数: 24

約数和(自身を含む): 28145520

約数和(自身を除く): 7499345

約数列:

[1, 5, 11, 25, 55, 193, 275, 389, 965, 1945, 2123, 4279, 4825, 9725, 10615, 21395, 53075, 75077, 106975, 375385, 825847, 1876925, 4129235, 20646175]

約数ペア:

[(1, 20646175), (5, 4129235), (11, 1876925), (25, 825847), (55, 375385), (193, 106975), (275, 75077), (389, 53075), (965, 21395), (1945, 10615), (2123, 9725), (4279, 4825)]