19201091

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{701}}^1$

素因数の和:771

約数の個数: 24

約数和(自身を含む): 24648624

約数和(自身を除く): 5447533

約数列:

[1, 7, 13, 43, 49, 91, 301, 559, 637, 701, 2107, 3913, 4907, 9113, 27391, 30143, 34349, 63791, 211001, 391859, 446537, 1477007, 2743013, 19201091]

約数ペア:

[(1, 19201091), (7, 2743013), (13, 1477007), (43, 446537), (49, 391859), (91, 211001), (301, 63791), (559, 34349), (637, 30143), (701, 27391), (2107, 9113), (3913, 4907)]