19889104

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{40099}}^1$

素因数の和:40138

約数の個数: 20

約数和(自身を含む): 39779200

約数和(自身を除く): 19890096

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 40099, 80198, 160396, 320792, 641584, 1243069, 2486138, 4972276, 9944552, 19889104]

約数ペア:

[(1, 19889104), (2, 9944552), (4, 4972276), (8, 2486138), (16, 1243069), (31, 641584), (62, 320792), (124, 160396), (248, 80198), (496, 40099)]