18985516

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{449}}^1$

素因数の和:526

約数の個数: 36

約数和(自身を含む): 37535400

約数和(自身を除く): 18549884

約数列:

[1, 2, 4, 11, 22, 31, 44, 62, 124, 341, 449, 682, 898, 961, 1364, 1796, 1922, 3844, 4939, 9878, 10571, 13919, 19756, 21142, 27838, 42284, 55676, 153109, 306218, 431489, 612436, 862978, 1725956, 4746379, 9492758, 18985516]

約数ペア:

[(1, 18985516), (2, 9492758), (4, 4746379), (11, 1725956), (22, 862978), (31, 612436), (44, 431489), (62, 306218), (124, 153109), (341, 55676), (449, 42284), (682, 27838), (898, 21142), (961, 19756), (1364, 13919), (1796, 10571), (1922, 9878), (3844, 4939)]