19865265

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{359}}^1$

素因数の和:422

約数の個数: 64

約数和(自身を含む): 39813120

約数和(自身を除く): 19947855

約数列:

[1, 3, 5, 7, 15, 17, 21, 31, 35, 51, 85, 93, 105, 119, 155, 217, 255, 357, 359, 465, 527, 595, 651, 1077, 1085, 1581, 1785, 1795, 2513, 2635, 3255, 3689, 5385, 6103, 7539, 7905, 11067, 11129, 12565, 18309, 18445, 30515, 33387, 37695, 42721, 55335, 55645, 77903, 91545, 128163, 166935, 189193, 213605, 233709, 389515, 567579, 640815, 945965, 1168545, 1324351, 2837895, 3973053, 6621755, 19865265]

約数ペア:

[(1, 19865265), (3, 6621755), (5, 3973053), (7, 2837895), (15, 1324351), (17, 1168545), (21, 945965), (31, 640815), (35, 567579), (51, 389515), (85, 233709), (93, 213605), (105, 189193), (119, 166935), (155, 128163), (217, 91545), (255, 77903), (357, 55645), (359, 55335), (465, 42721), (527, 37695), (595, 33387), (651, 30515), (1077, 18445), (1085, 18309), (1581, 12565), (1785, 11129), (1795, 11067), (2513, 7905), (2635, 7539), (3255, 6103), (3689, 5385)]