638332988

素因数分解:

$2^2\times {\mathrm{127}}^1\times {\mathrm{661}}^1\times {\mathrm{1901}}^1$

素因数の和:2693

約数の個数: 24

約数和(自身を含む): 1128175104

約数和(自身を除く): 489842116

約数列:

[1, 2, 4, 127, 254, 508, 661, 1322, 1901, 2644, 3802, 7604, 83947, 167894, 241427, 335788, 482854, 965708, 1256561, 2513122, 5026244, 159583247, 319166494, 638332988]

約数ペア:

[(1, 638332988), (2, 319166494), (4, 159583247), (127, 5026244), (254, 2513122), (508, 1256561), (661, 965708), (1322, 482854), (1901, 335788), (2644, 241427), (3802, 167894), (7604, 83947)]