20991296

素因数分解:

$2^6\times {\mathrm{73}}^1\times {\mathrm{4493}}^1$

素因数の和:4578

約数の個数: 28

約数和(自身を含む): 42234612

約数和(自身を除く): 21243316

約数列:

[1, 2, 4, 8, 16, 32, 64, 73, 146, 292, 584, 1168, 2336, 4493, 4672, 8986, 17972, 35944, 71888, 143776, 287552, 327989, 655978, 1311956, 2623912, 5247824, 10495648, 20991296]

約数ペア:

[(1, 20991296), (2, 10495648), (4, 5247824), (8, 2623912), (16, 1311956), (32, 655978), (64, 327989), (73, 287552), (146, 143776), (292, 71888), (584, 35944), (1168, 17972), (2336, 8986), (4493, 4672)]