128553776

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{19937}}^1$

素因数の和:19989

約数の個数: 40

約数和(自身を含む): 276898944

約数和(自身を除く): 148345168

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 208, 248, 403, 496, 806, 1612, 3224, 6448, 19937, 39874, 79748, 159496, 259181, 318992, 518362, 618047, 1036724, 1236094, 2073448, 2472188, 4146896, 4944376, 8034611, 9888752, 16069222, 32138444, 64276888, 128553776]

約数ペア:

[(1, 128553776), (2, 64276888), (4, 32138444), (8, 16069222), (13, 9888752), (16, 8034611), (26, 4944376), (31, 4146896), (52, 2472188), (62, 2073448), (104, 1236094), (124, 1036724), (208, 618047), (248, 518362), (403, 318992), (496, 259181), (806, 159496), (1612, 79748), (3224, 39874), (6448, 19937)]