19155554

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{20249}}^1$

素因数の和:20305

約数の個数: 16

約数和(自身を含む): 32076000

約数和(自身を除く): 12920446

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 20249, 40498, 222739, 445478, 870707, 1741414, 9577777, 19155554]

約数ペア:

[(1, 19155554), (2, 9577777), (11, 1741414), (22, 870707), (43, 445478), (86, 222739), (473, 40498), (946, 20249)]