257681270

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{334651}}^1$

素因数の和:334676

約数の個数: 32

約数和(自身を含む): 578278656

約数和(自身を除く): 320597386

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770, 334651, 669302, 1673255, 2342557, 3346510, 3681161, 4685114, 7362322, 11712785, 18405805, 23425570, 25768127, 36811610, 51536254, 128840635, 257681270]

約数ペア:

[(1, 257681270), (2, 128840635), (5, 51536254), (7, 36811610), (10, 25768127), (11, 23425570), (14, 18405805), (22, 11712785), (35, 7362322), (55, 4685114), (70, 3681161), (77, 3346510), (110, 2342557), (154, 1673255), (385, 669302), (770, 334651)]