261249846

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{17911}}^1$

素因数の和:17957

約数の個数: 64

約数和(自身を含む): 649990656

約数和(自身を除く): 388740810

約数列:

[1, 2, 3, 6, 11, 13, 17, 22, 26, 33, 34, 39, 51, 66, 78, 102, 143, 187, 221, 286, 374, 429, 442, 561, 663, 858, 1122, 1326, 2431, 4862, 7293, 14586, 17911, 35822, 53733, 107466, 197021, 232843, 304487, 394042, 465686, 591063, 608974, 698529, 913461, 1182126, 1397058, 1826922, 2561273, 3349357, 3958331, 5122546, 6698714, 7683819, 7916662, 10048071, 11874993, 15367638, 20096142, 23749986, 43541641, 87083282, 130624923, 261249846]

約数ペア:

[(1, 261249846), (2, 130624923), (3, 87083282), (6, 43541641), (11, 23749986), (13, 20096142), (17, 15367638), (22, 11874993), (26, 10048071), (33, 7916662), (34, 7683819), (39, 6698714), (51, 5122546), (66, 3958331), (78, 3349357), (102, 2561273), (143, 1826922), (187, 1397058), (221, 1182126), (286, 913461), (374, 698529), (429, 608974), (442, 591063), (561, 465686), (663, 394042), (858, 304487), (1122, 232843), (1326, 197021), (2431, 107466), (4862, 53733), (7293, 35822), (14586, 17911)]