81864820

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{177967}}^1$

素因数の和:177999

約数の個数: 24

約数和(自身を含む): 179391744

約数和(自身を除く): 97526924

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 177967, 355934, 711868, 889835, 1779670, 3559340, 4093241, 8186482, 16372964, 20466205, 40932410, 81864820]

約数ペア:

[(1, 81864820), (2, 40932410), (4, 20466205), (5, 16372964), (10, 8186482), (20, 4093241), (23, 3559340), (46, 1779670), (92, 889835), (115, 711868), (230, 355934), (460, 177967)]