208292721

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{1213}}^1$

素因数の和:1290

約数の個数: 64

約数和(自身を含む): 372008448

約数和(自身を除く): 163715727

約数列:

[1, 3, 7, 13, 17, 21, 37, 39, 51, 91, 111, 119, 221, 259, 273, 357, 481, 629, 663, 777, 1213, 1443, 1547, 1887, 3367, 3639, 4403, 4641, 8177, 8491, 10101, 13209, 15769, 20621, 24531, 25473, 44881, 47307, 57239, 61863, 110383, 134643, 144347, 171717, 268073, 314167, 331149, 433041, 583453, 762977, 804219, 942501, 1750359, 1876511, 2288931, 4084171, 5340839, 5629533, 9918701, 12252513, 16022517, 29756103, 69430907, 208292721]

約数ペア:

[(1, 208292721), (3, 69430907), (7, 29756103), (13, 16022517), (17, 12252513), (21, 9918701), (37, 5629533), (39, 5340839), (51, 4084171), (91, 2288931), (111, 1876511), (119, 1750359), (221, 942501), (259, 804219), (273, 762977), (357, 583453), (481, 433041), (629, 331149), (663, 314167), (777, 268073), (1213, 171717), (1443, 144347), (1547, 134643), (1887, 110383), (3367, 61863), (3639, 57239), (4403, 47307), (4641, 44881), (8177, 25473), (8491, 24531), (10101, 20621), (13209, 15769)]