128539888

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{337}}^1\times {\mathrm{769}}^1$

素因数の和:1145

約数の個数: 40

約数和(自身を含む): 258177920

約数和(自身を除く): 129638032

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 337, 496, 674, 769, 1348, 1538, 2696, 3076, 5392, 6152, 10447, 12304, 20894, 23839, 41788, 47678, 83576, 95356, 167152, 190712, 259153, 381424, 518306, 1036612, 2073224, 4146448, 8033743, 16067486, 32134972, 64269944, 128539888]

約数ペア:

[(1, 128539888), (2, 64269944), (4, 32134972), (8, 16067486), (16, 8033743), (31, 4146448), (62, 2073224), (124, 1036612), (248, 518306), (337, 381424), (496, 259153), (674, 190712), (769, 167152), (1348, 95356), (1538, 83576), (2696, 47678), (3076, 41788), (5392, 23839), (6152, 20894), (10447, 12304)]