18719921

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{2083}}^1$

素因数の和:2156

約数の個数: 16

約数和(自身を含む): 22007040

約数和(自身を除く): 3287119

約数列:

[1, 11, 19, 43, 209, 473, 817, 2083, 8987, 22913, 39577, 89569, 435347, 985259, 1701811, 18719921]

約数ペア:

[(1, 18719921), (11, 1701811), (19, 985259), (43, 435347), (209, 89569), (473, 39577), (817, 22913), (2083, 8987)]