20784392

素因数分解:

$2^3\times {\mathrm{139}}^1\times {\mathrm{18691}}^1$

素因数の和:18836

約数の個数: 16

約数和(自身を含む): 39253200

約数和(自身を除く): 18468808

約数列:

[1, 2, 4, 8, 139, 278, 556, 1112, 18691, 37382, 74764, 149528, 2598049, 5196098, 10392196, 20784392]

約数ペア:

[(1, 20784392), (2, 10392196), (4, 5196098), (8, 2598049), (139, 149528), (278, 74764), (556, 37382), (1112, 18691)]