21605144

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{245513}}^1$

素因数の和:245530

約数の個数: 16

約数和(自身を含む): 44192520

約数和(自身を除く): 22587376

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 245513, 491026, 982052, 1964104, 2700643, 5401286, 10802572, 21605144]

約数ペア:

[(1, 21605144), (2, 10802572), (4, 5401286), (8, 2700643), (11, 1964104), (22, 982052), (44, 491026), (88, 245513)]