25978576

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{124897}}^1$

素因数の和:124918

約数の個数: 20

約数和(自身を含む): 54205732

約数和(自身を除く): 28227156

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 124897, 249794, 499588, 999176, 1623661, 1998352, 3247322, 6494644, 12989288, 25978576]

約数ペア:

[(1, 25978576), (2, 12989288), (4, 6494644), (8, 3247322), (13, 1998352), (16, 1623661), (26, 999176), (52, 499588), (104, 249794), (208, 124897)]