20956784

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77047}}^1$

素因数の和:77072

約数の個数: 20

約数和(自身を含む): 42992784

約数和(自身を除く): 22036000

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77047, 154094, 308188, 616376, 1232752, 1309799, 2619598, 5239196, 10478392, 20956784]

約数ペア:

[(1, 20956784), (2, 10478392), (4, 5239196), (8, 2619598), (16, 1309799), (17, 1232752), (34, 616376), (68, 308188), (136, 154094), (272, 77047)]