257581263

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1\times {\mathrm{853}}^1$

素因数の和:1095

約数の個数: 32

約数和(自身を含む): 377782272

約数和(自身を除く): 120201009

約数列:

[1, 3, 17, 31, 51, 93, 191, 527, 573, 853, 1581, 2559, 3247, 5921, 9741, 14501, 17763, 26443, 43503, 79329, 100657, 162923, 301971, 449531, 488769, 1348593, 2769691, 5050613, 8309073, 15151839, 85860421, 257581263]

約数ペア:

[(1, 257581263), (3, 85860421), (17, 15151839), (31, 8309073), (51, 5050613), (93, 2769691), (191, 1348593), (527, 488769), (573, 449531), (853, 301971), (1581, 162923), (2559, 100657), (3247, 79329), (5921, 43503), (9741, 26443), (14501, 17763)]