991287

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:84

約数の個数: 48

約数和(自身を含む): 1797120

約数和(自身を除く): 805833

約数列:

[1, 3, 9, 11, 17, 19, 31, 33, 51, 57, 93, 99, 153, 171, 187, 209, 279, 323, 341, 527, 561, 589, 627, 969, 1023, 1581, 1683, 1767, 1881, 2907, 3069, 3553, 4743, 5301, 5797, 6479, 10013, 10659, 17391, 19437, 30039, 31977, 52173, 58311, 90117, 110143, 330429, 991287]

約数ペア:

[(1, 991287), (3, 330429), (9, 110143), (11, 90117), (17, 58311), (19, 52173), (31, 31977), (33, 30039), (51, 19437), (57, 17391), (93, 10659), (99, 10013), (153, 6479), (171, 5797), (187, 5301), (209, 4743), (279, 3553), (323, 3069), (341, 2907), (527, 1881), (561, 1767), (589, 1683), (627, 1581), (969, 1023)]