81371824

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{118273}}^1$

素因数の和:118324

約数の個数: 20

約数和(自身を含む): 161325736

約数和(自身を除く): 79953912

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 118273, 236546, 473092, 946184, 1892368, 5085739, 10171478, 20342956, 40685912, 81371824]

約数ペア:

[(1, 81371824), (2, 40685912), (4, 20342956), (8, 10171478), (16, 5085739), (43, 1892368), (86, 946184), (172, 473092), (344, 236546), (688, 118273)]