20405926900

素因数分解:

$2^2\times 5^2\times {\mathrm{479}}^1\times {\mathrm{426011}}^1$

素因数の和:426504

約数の個数: 36

約数和(自身を含む): 44373409920

約数和(自身を除く): 23967483020

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 479, 958, 1916, 2395, 4790, 9580, 11975, 23950, 47900, 426011, 852022, 1704044, 2130055, 4260110, 8520220, 10650275, 21300550, 42601100, 204059269, 408118538, 816237076, 1020296345, 2040592690, 4081185380, 5101481725, 10202963450, 20405926900]

約数ペア:

[(1, 20405926900), (2, 10202963450), (4, 5101481725), (5, 4081185380), (10, 2040592690), (20, 1020296345), (25, 816237076), (50, 408118538), (100, 204059269), (479, 42601100), (958, 21300550), (1916, 10650275), (2395, 8520220), (4790, 4260110), (9580, 2130055), (11975, 1704044), (23950, 852022), (47900, 426011)]