20521904

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{98663}}^1$

素因数の和:98684

約数の個数: 20

約数和(自身を含む): 42820176

約数和(自身を除く): 22298272

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 98663, 197326, 394652, 789304, 1282619, 1578608, 2565238, 5130476, 10260952, 20521904]

約数ペア:

[(1, 20521904), (2, 10260952), (4, 5130476), (8, 2565238), (13, 1578608), (16, 1282619), (26, 789304), (52, 394652), (104, 197326), (208, 98663)]