257513776

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{39937}}^1$

素因数の和:39989

約数の個数: 40

約数和(自身を含む): 554658944

約数和(自身を除く): 297145168

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 208, 248, 403, 496, 806, 1612, 3224, 6448, 39937, 79874, 159748, 319496, 519181, 638992, 1038362, 1238047, 2076724, 2476094, 4153448, 4952188, 8306896, 9904376, 16094611, 19808752, 32189222, 64378444, 128756888, 257513776]

約数ペア:

[(1, 257513776), (2, 128756888), (4, 64378444), (8, 32189222), (13, 19808752), (16, 16094611), (26, 9904376), (31, 8306896), (52, 4952188), (62, 4153448), (104, 2476094), (124, 2076724), (208, 1238047), (248, 1038362), (403, 638992), (496, 519181), (806, 319496), (1612, 159748), (3224, 79874), (6448, 39937)]