21298475

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1889}}^1$

素因数の和:1951

約数の個数: 24

約数和(自身を含む): 29529360

約数和(自身を除く): 8230885

約数列:

[1, 5, 11, 25, 41, 55, 205, 275, 451, 1025, 1889, 2255, 9445, 11275, 20779, 47225, 77449, 103895, 387245, 519475, 851939, 1936225, 4259695, 21298475]

約数ペア:

[(1, 21298475), (5, 4259695), (11, 1936225), (25, 851939), (41, 519475), (55, 387245), (205, 103895), (275, 77449), (451, 47225), (1025, 20779), (1889, 11275), (2255, 9445)]