81981656

素因数分解:

$2^3\times {\mathrm{19}}^2\times {\mathrm{28387}}^1$

素因数の和:28431

約数の個数: 24

約数和(自身を含む): 162237420

約数和(自身を除く): 80255764

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 361, 722, 1444, 2888, 28387, 56774, 113548, 227096, 539353, 1078706, 2157412, 4314824, 10247707, 20495414, 40990828, 81981656]

約数ペア:

[(1, 81981656), (2, 40990828), (4, 20495414), (8, 10247707), (19, 4314824), (38, 2157412), (76, 1078706), (152, 539353), (361, 227096), (722, 113548), (1444, 56774), (2888, 28387)]