28163740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{313}}^1\times {\mathrm{409}}^1$

素因数の和:742

約数の個数: 48

約数和(自身を含む): 64884960

約数和(自身を除く): 36721220

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 313, 409, 626, 818, 1252, 1565, 1636, 2045, 3130, 3443, 4090, 4499, 6260, 6886, 8180, 8998, 13772, 17215, 17996, 22495, 34430, 44990, 68860, 89980, 128017, 256034, 512068, 640085, 1280170, 1408187, 2560340, 2816374, 5632748, 7040935, 14081870, 28163740]

約数ペア:

[(1, 28163740), (2, 14081870), (4, 7040935), (5, 5632748), (10, 2816374), (11, 2560340), (20, 1408187), (22, 1280170), (44, 640085), (55, 512068), (110, 256034), (220, 128017), (313, 89980), (409, 68860), (626, 44990), (818, 34430), (1252, 22495), (1565, 17996), (1636, 17215), (2045, 13772), (3130, 8998), (3443, 8180), (4090, 6886), (4499, 6260)]