81515480

素因数分解:

$2^3\times 5^1\times {\mathrm{193}}^1\times {\mathrm{10559}}^1$

素因数の和:10763

約数の個数: 32

約数和(自身を含む): 184377600

約数和(自身を除く): 102862120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 193, 386, 772, 965, 1544, 1930, 3860, 7720, 10559, 21118, 42236, 52795, 84472, 105590, 211180, 422360, 2037887, 4075774, 8151548, 10189435, 16303096, 20378870, 40757740, 81515480]

約数ペア:

[(1, 81515480), (2, 40757740), (4, 20378870), (5, 16303096), (8, 10189435), (10, 8151548), (20, 4075774), (40, 2037887), (193, 422360), (386, 211180), (772, 105590), (965, 84472), (1544, 52795), (1930, 42236), (3860, 21118), (7720, 10559)]