208518219

素因数分解:

$3^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{28289}}^1$

素因数の和:28321

約数の個数: 40

約数和(自身を含む): 383386080

約数和(自身を除く): 174867861

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 81, 91, 117, 189, 273, 351, 567, 819, 1053, 2457, 7371, 28289, 84867, 198023, 254601, 367757, 594069, 763803, 1103271, 1782207, 2291409, 2574299, 3309813, 5346621, 7722897, 9929439, 16039863, 23168691, 29788317, 69506073, 208518219]

約数ペア:

[(1, 208518219), (3, 69506073), (7, 29788317), (9, 23168691), (13, 16039863), (21, 9929439), (27, 7722897), (39, 5346621), (63, 3309813), (81, 2574299), (91, 2291409), (117, 1782207), (189, 1103271), (273, 763803), (351, 594069), (567, 367757), (819, 254601), (1053, 198023), (2457, 84867), (7371, 28289)]