1999996

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{127}}^2$

素因数の和:289

約数の個数: 18

約数和(自身を含む): 3641568

約数和(自身を除く): 1641572

約数列:

[1, 2, 4, 31, 62, 124, 127, 254, 508, 3937, 7874, 15748, 16129, 32258, 64516, 499999, 999998, 1999996]

約数ペア:

[(1, 1999996), (2, 999998), (4, 499999), (31, 64516), (62, 32258), (124, 16129), (127, 15748), (254, 7874), (508, 3937)]