18914727

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{607}}^1$

素因数の和:687

約数の個数: 32

約数和(自身を含む): 29417472

約数和(自身を除く): 10502745

約数列:

[1, 3, 13, 17, 39, 47, 51, 141, 221, 607, 611, 663, 799, 1821, 1833, 2397, 7891, 10319, 10387, 23673, 28529, 30957, 31161, 85587, 134147, 370877, 402441, 484993, 1112631, 1454979, 6304909, 18914727]

約数ペア:

[(1, 18914727), (3, 6304909), (13, 1454979), (17, 1112631), (39, 484993), (47, 402441), (51, 370877), (141, 134147), (221, 85587), (607, 31161), (611, 30957), (663, 28529), (799, 23673), (1821, 10387), (1833, 10319), (2397, 7891)]