21108725

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{1301}}^1$

素因数の和:1381

約数の個数: 24

約数和(自身を含む): 29060640

約数和(自身を除く): 7951915

約数列:

[1, 5, 11, 25, 55, 59, 275, 295, 649, 1301, 1475, 3245, 6505, 14311, 16225, 32525, 71555, 76759, 357775, 383795, 844349, 1918975, 4221745, 21108725]

約数ペア:

[(1, 21108725), (5, 4221745), (11, 1918975), (25, 844349), (55, 383795), (59, 357775), (275, 76759), (295, 71555), (649, 32525), (1301, 16225), (1475, 14311), (3245, 6505)]