81721736

素因数分解:

$2^3\times {\mathrm{19}}^2\times {\mathrm{28297}}^1$

素因数の和:28341

約数の個数: 24

約数和(自身を含む): 161723070

約数和(自身を除く): 80001334

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 361, 722, 1444, 2888, 28297, 56594, 113188, 226376, 537643, 1075286, 2150572, 4301144, 10215217, 20430434, 40860868, 81721736]

約数ペア:

[(1, 81721736), (2, 40860868), (4, 20430434), (8, 10215217), (19, 4301144), (38, 2150572), (76, 1075286), (152, 537643), (361, 226376), (722, 113188), (1444, 56594), (2888, 28297)]