21204425

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{929}}^1$

素因数の和:1033

約数の個数: 24

約数和(自身を含む): 29060640

約数和(自身を除く): 7856215

約数列:

[1, 5, 11, 25, 55, 83, 275, 415, 913, 929, 2075, 4565, 4645, 10219, 22825, 23225, 51095, 77107, 255475, 385535, 848177, 1927675, 4240885, 21204425]

約数ペア:

[(1, 21204425), (5, 4240885), (11, 1927675), (25, 848177), (55, 385535), (83, 255475), (275, 77107), (415, 51095), (913, 23225), (929, 22825), (2075, 10219), (4565, 4645)]