261965008

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{229}}^1$

素因数の和:380

約数の個数: 80

約数和(自身を含む): 554428800

約数和(自身を除く): 292463792

約数列:

[1, 2, 4, 8, 16, 19, 38, 53, 71, 76, 106, 142, 152, 212, 229, 284, 304, 424, 458, 568, 848, 916, 1007, 1136, 1349, 1832, 2014, 2698, 3664, 3763, 4028, 4351, 5396, 7526, 8056, 8702, 10792, 12137, 15052, 16112, 16259, 17404, 21584, 24274, 30104, 32518, 34808, 48548, 60208, 65036, 69616, 71497, 97096, 130072, 142994, 194192, 230603, 260144, 285988, 308921, 461206, 571976, 617842, 861727, 922412, 1143952, 1235684, 1723454, 1844824, 2471368, 3446908, 3689648, 4942736, 6893816, 13787632, 16372813, 32745626, 65491252, 130982504, 261965008]

約数ペア:

[(1, 261965008), (2, 130982504), (4, 65491252), (8, 32745626), (16, 16372813), (19, 13787632), (38, 6893816), (53, 4942736), (71, 3689648), (76, 3446908), (106, 2471368), (142, 1844824), (152, 1723454), (212, 1235684), (229, 1143952), (284, 922412), (304, 861727), (424, 617842), (458, 571976), (568, 461206), (848, 308921), (916, 285988), (1007, 260144), (1136, 230603), (1349, 194192), (1832, 142994), (2014, 130072), (2698, 97096), (3664, 71497), (3763, 69616), (4028, 65036), (4351, 60208), (5396, 48548), (7526, 34808), (8056, 32518), (8702, 30104), (10792, 24274), (12137, 21584), (15052, 17404), (16112, 16259)]