21189575

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{2657}}^1$

素因数の和:2707

約数の個数: 24

約数和(自身を含む): 29663280

約数和(自身を除く): 8473705

約数列:

[1, 5, 11, 25, 29, 55, 145, 275, 319, 725, 1595, 2657, 7975, 13285, 29227, 66425, 77053, 146135, 385265, 730675, 847583, 1926325, 4237915, 21189575]

約数ペア:

[(1, 21189575), (5, 4237915), (11, 1926325), (25, 847583), (29, 730675), (55, 385265), (145, 146135), (275, 77053), (319, 66425), (725, 29227), (1595, 13285), (2657, 7975)]