19187245

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:146

約数の個数: 64

約数和(自身を含む): 31426560

約数和(自身を除く): 12239315

約数列:

[1, 5, 7, 11, 19, 35, 43, 55, 61, 77, 95, 133, 209, 215, 301, 305, 385, 427, 473, 665, 671, 817, 1045, 1159, 1463, 1505, 2135, 2365, 2623, 3311, 3355, 4085, 4697, 5719, 5795, 7315, 8113, 8987, 12749, 13115, 16555, 18361, 23485, 28595, 28853, 40565, 44935, 49837, 62909, 63745, 89243, 91805, 144265, 201971, 249185, 314545, 348859, 446215, 548207, 1009855, 1744295, 2741035, 3837449, 19187245]

約数ペア:

[(1, 19187245), (5, 3837449), (7, 2741035), (11, 1744295), (19, 1009855), (35, 548207), (43, 446215), (55, 348859), (61, 314545), (77, 249185), (95, 201971), (133, 144265), (209, 91805), (215, 89243), (301, 63745), (305, 62909), (385, 49837), (427, 44935), (473, 40565), (665, 28853), (671, 28595), (817, 23485), (1045, 18361), (1159, 16555), (1463, 13115), (1505, 12749), (2135, 8987), (2365, 8113), (2623, 7315), (3311, 5795), (3355, 5719), (4085, 4697)]