81056380

素因数分解:

$2^2\times 5^1\times {\mathrm{479}}^1\times {\mathrm{8461}}^1$

素因数の和:8949

約数の個数: 24

約数和(自身を含む): 170593920

約数和(自身を除く): 89537540

約数列:

[1, 2, 4, 5, 10, 20, 479, 958, 1916, 2395, 4790, 8461, 9580, 16922, 33844, 42305, 84610, 169220, 4052819, 8105638, 16211276, 20264095, 40528190, 81056380]

約数ペア:

[(1, 81056380), (2, 40528190), (4, 20264095), (5, 16211276), (10, 8105638), (20, 4052819), (479, 169220), (958, 84610), (1916, 42305), (2395, 33844), (4790, 16922), (8461, 9580)]