21121144

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{617}}^1$

素因数の和:1023

約数の個数: 32

約数和(自身を含む): 43383600

約数和(自身を除く): 22262456

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 389, 617, 778, 1234, 1556, 2468, 3112, 4279, 4936, 6787, 8558, 13574, 17116, 27148, 34232, 54296, 240013, 480026, 960052, 1920104, 2640143, 5280286, 10560572, 21121144]

約数ペア:

[(1, 21121144), (2, 10560572), (4, 5280286), (8, 2640143), (11, 1920104), (22, 960052), (44, 480026), (88, 240013), (389, 54296), (617, 34232), (778, 27148), (1234, 17116), (1556, 13574), (2468, 8558), (3112, 6787), (4279, 4936)]