2611640

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{599}}^1$

素因数の和:719

約数の個数: 32

約数和(自身を含む): 5940000

約数和(自身を除く): 3328360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 599, 872, 1090, 1198, 2180, 2396, 2995, 4360, 4792, 5990, 11980, 23960, 65291, 130582, 261164, 326455, 522328, 652910, 1305820, 2611640]

約数ペア:

[(1, 2611640), (2, 1305820), (4, 652910), (5, 522328), (8, 326455), (10, 261164), (20, 130582), (40, 65291), (109, 23960), (218, 11980), (436, 5990), (545, 4792), (599, 4360), (872, 2995), (1090, 2396), (1198, 2180)]