19240221

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:226

約数の個数: 64

約数和(自身を含む): 35481600

約数和(自身を除く): 16241379

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 43, 77, 91, 129, 143, 149, 231, 273, 301, 429, 447, 473, 559, 903, 1001, 1043, 1419, 1639, 1677, 1937, 3003, 3129, 3311, 3913, 4917, 5811, 6149, 6407, 9933, 11473, 11739, 13559, 18447, 19221, 21307, 34419, 40677, 43043, 44849, 63921, 70477, 83291, 129129, 134547, 149149, 211431, 249873, 447447, 493339, 583037, 916201, 1480017, 1749111, 2748603, 6413407, 19240221]

約数ペア:

[(1, 19240221), (3, 6413407), (7, 2748603), (11, 1749111), (13, 1480017), (21, 916201), (33, 583037), (39, 493339), (43, 447447), (77, 249873), (91, 211431), (129, 149149), (143, 134547), (149, 129129), (231, 83291), (273, 70477), (301, 63921), (429, 44849), (447, 43043), (473, 40677), (559, 34419), (903, 21307), (1001, 19221), (1043, 18447), (1419, 13559), (1639, 11739), (1677, 11473), (1937, 9933), (3003, 6407), (3129, 6149), (3311, 5811), (3913, 4917)]