20424580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{263}}^1\times {\mathrm{353}}^1$

素因数の和:636

約数の個数: 48

約数和(自身を含む): 47101824

約数和(自身を除く): 26677244

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 263, 353, 526, 706, 1052, 1315, 1412, 1765, 2630, 2893, 3530, 3883, 5260, 5786, 7060, 7766, 11572, 14465, 15532, 19415, 28930, 38830, 57860, 77660, 92839, 185678, 371356, 464195, 928390, 1021229, 1856780, 2042458, 4084916, 5106145, 10212290, 20424580]

約数ペア:

[(1, 20424580), (2, 10212290), (4, 5106145), (5, 4084916), (10, 2042458), (11, 1856780), (20, 1021229), (22, 928390), (44, 464195), (55, 371356), (110, 185678), (220, 92839), (263, 77660), (353, 57860), (526, 38830), (706, 28930), (1052, 19415), (1315, 15532), (1412, 14465), (1765, 11572), (2630, 7766), (2893, 7060), (3530, 5786), (3883, 5260)]