19980554

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{29297}}^1$

素因数の和:29341

約数の個数: 16

約数和(自身を含む): 33751296

約数和(自身を除く): 13770742

約数列:

[1, 2, 11, 22, 31, 62, 341, 682, 29297, 58594, 322267, 644534, 908207, 1816414, 9990277, 19980554]

約数ペア:

[(1, 19980554), (2, 9990277), (11, 1816414), (22, 908207), (31, 644534), (62, 322267), (341, 58594), (682, 29297)]