1399805

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{821}}^1$

素因数の和:868

約数の個数: 16

約数和(自身を含む): 1893888

約数和(自身を除く): 494083

約数列:

[1, 5, 11, 31, 55, 155, 341, 821, 1705, 4105, 9031, 25451, 45155, 127255, 279961, 1399805]

約数ペア:

[(1, 1399805), (5, 279961), (11, 127255), (31, 45155), (55, 25451), (155, 9031), (341, 4105), (821, 1705)]