20717116

素因数分解:

$2^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{5323}}^1$

素因数の和:5473

約数の個数: 24

約数和(自身を含む): 41740160

約数和(自身を除く): 21023044

約数列:

[1, 2, 4, 7, 14, 28, 139, 278, 556, 973, 1946, 3892, 5323, 10646, 21292, 37261, 74522, 149044, 739897, 1479794, 2959588, 5179279, 10358558, 20717116]

約数ペア:

[(1, 20717116), (2, 10358558), (4, 5179279), (7, 2959588), (14, 1479794), (28, 739897), (139, 149044), (278, 74522), (556, 37261), (973, 21292), (1946, 10646), (3892, 5323)]