20703904

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{317}}^1$

素因数の和:497

約数の個数: 48

約数和(自身を含む): 44315208

約数和(自身を除く): 23611304

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 157, 208, 314, 317, 416, 628, 634, 1256, 1268, 2041, 2512, 2536, 4082, 4121, 5024, 5072, 8164, 8242, 10144, 16328, 16484, 32656, 32968, 49769, 65312, 65936, 99538, 131872, 199076, 398152, 646997, 796304, 1293994, 1592608, 2587988, 5175976, 10351952, 20703904]

約数ペア:

[(1, 20703904), (2, 10351952), (4, 5175976), (8, 2587988), (13, 1592608), (16, 1293994), (26, 796304), (32, 646997), (52, 398152), (104, 199076), (157, 131872), (208, 99538), (314, 65936), (317, 65312), (416, 49769), (628, 32968), (634, 32656), (1256, 16484), (1268, 16328), (2041, 10144), (2512, 8242), (2536, 8164), (4082, 5072), (4121, 5024)]