30511280

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{3499}}^1$

素因数の和:3621

約数の個数: 40

約数和(自身を含む): 71610000

約数和(自身を除く): 41098720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 3499, 4360, 6998, 8720, 13996, 17495, 27992, 34990, 55984, 69980, 139960, 279920, 381391, 762782, 1525564, 1906955, 3051128, 3813910, 6102256, 7627820, 15255640, 30511280]

約数ペア:

[(1, 30511280), (2, 15255640), (4, 7627820), (5, 6102256), (8, 3813910), (10, 3051128), (16, 1906955), (20, 1525564), (40, 762782), (80, 381391), (109, 279920), (218, 139960), (436, 69980), (545, 55984), (872, 34990), (1090, 27992), (1744, 17495), (2180, 13996), (3499, 8720), (4360, 6998)]