28858840

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{6619}}^1$

素因数の和:6739

約数の個数: 32

約数和(自身を含む): 65538000

約数和(自身を除く): 36679160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 6619, 13238, 26476, 33095, 52952, 66190, 132380, 264760, 721471, 1442942, 2885884, 3607355, 5771768, 7214710, 14429420, 28858840]

約数ペア:

[(1, 28858840), (2, 14429420), (4, 7214710), (5, 5771768), (8, 3607355), (10, 2885884), (20, 1442942), (40, 721471), (109, 264760), (218, 132380), (436, 66190), (545, 52952), (872, 33095), (1090, 26476), (2180, 13238), (4360, 6619)]