399212

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{211}}^1$

素因数の和:269

約数の個数: 24

約数和(自身を含む): 783552

約数和(自身を除く): 384340

約数列:

[1, 2, 4, 11, 22, 43, 44, 86, 172, 211, 422, 473, 844, 946, 1892, 2321, 4642, 9073, 9284, 18146, 36292, 99803, 199606, 399212]

約数ペア:

[(1, 399212), (2, 199606), (4, 99803), (11, 36292), (22, 18146), (43, 9284), (44, 9073), (86, 4642), (172, 2321), (211, 1892), (422, 946), (473, 844)]