20982775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1861}}^1$

素因数の和:1923

約数の個数: 24

約数和(自身を含む): 29091888

約数和(自身を除く): 8109113

約数列:

[1, 5, 11, 25, 41, 55, 205, 275, 451, 1025, 1861, 2255, 9305, 11275, 20471, 46525, 76301, 102355, 381505, 511775, 839311, 1907525, 4196555, 20982775]

約数ペア:

[(1, 20982775), (5, 4196555), (11, 1907525), (25, 839311), (41, 511775), (55, 381505), (205, 102355), (275, 76301), (451, 46525), (1025, 20471), (1861, 11275), (2255, 9305)]