2586440

素因数分解:

$2^3\times 5^1\times {\mathrm{64661}}^1$

素因数の和:64672

約数の個数: 16

約数和(自身を含む): 5819580

約数和(自身を除く): 3233140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 64661, 129322, 258644, 323305, 517288, 646610, 1293220, 2586440]

約数ペア:

[(1, 2586440), (2, 1293220), (4, 646610), (5, 517288), (8, 323305), (10, 258644), (20, 129322), (40, 64661)]