400876

素因数分解:

$2^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{139}}^1$

素因数の和:253

約数の個数: 24

約数和(自身を含む): 815360

約数和(自身を除く): 414484

約数列:

[1, 2, 4, 7, 14, 28, 103, 139, 206, 278, 412, 556, 721, 973, 1442, 1946, 2884, 3892, 14317, 28634, 57268, 100219, 200438, 400876]

約数ペア:

[(1, 400876), (2, 200438), (4, 100219), (7, 57268), (14, 28634), (28, 14317), (103, 3892), (139, 2884), (206, 1946), (278, 1442), (412, 973), (556, 721)]