256996905

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{91621}}^1$

素因数の和:91657

約数の個数: 32

約数和(自身を含む): 474968448

約数和(自身を除く): 217971543

約数列:

[1, 3, 5, 11, 15, 17, 33, 51, 55, 85, 165, 187, 255, 561, 935, 2805, 91621, 274863, 458105, 1007831, 1374315, 1557557, 3023493, 4672671, 5039155, 7787785, 15117465, 17133127, 23363355, 51399381, 85665635, 256996905]

約数ペア:

[(1, 256996905), (3, 85665635), (5, 51399381), (11, 23363355), (15, 17133127), (17, 15117465), (33, 7787785), (51, 5039155), (55, 4672671), (85, 3023493), (165, 1557557), (187, 1374315), (255, 1007831), (561, 458105), (935, 274863), (2805, 91621)]