20643425

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{271}}^1\times {\mathrm{277}}^1$

素因数の和:569

約数の個数: 24

約数和(自身を含む): 28129152

約数和(自身を除く): 7485727

約数列:

[1, 5, 11, 25, 55, 271, 275, 277, 1355, 1385, 2981, 3047, 6775, 6925, 14905, 15235, 74525, 75067, 76175, 375335, 825737, 1876675, 4128685, 20643425]

約数ペア:

[(1, 20643425), (5, 4128685), (11, 1876675), (25, 825737), (55, 375335), (271, 76175), (275, 75067), (277, 74525), (1355, 15235), (1385, 14905), (2981, 6925), (3047, 6775)]