209898003

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{151}}^1\times {\mathrm{1789}}^1$

素因数の和:1987

約数の個数: 32

約数和(自身を含む): 330849280

約数和(自身を除く): 120951277

約数列:

[1, 3, 7, 21, 37, 111, 151, 259, 453, 777, 1057, 1789, 3171, 5367, 5587, 12523, 16761, 37569, 39109, 66193, 117327, 198579, 270139, 463351, 810417, 1390053, 1890973, 5672919, 9995143, 29985429, 69966001, 209898003]

約数ペア:

[(1, 209898003), (3, 69966001), (7, 29985429), (21, 9995143), (37, 5672919), (111, 1890973), (151, 1390053), (259, 810417), (453, 463351), (777, 270139), (1057, 198579), (1789, 117327), (3171, 66193), (5367, 39109), (5587, 37569), (12523, 16761)]