256996857

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{241}}^1\times {\mathrm{739}}^1$

素因数の和:1033

約数の個数: 32

約数和(自身を含む): 381082240

約数和(自身を除く): 124085383

約数列:

[1, 3, 13, 37, 39, 111, 241, 481, 723, 739, 1443, 2217, 3133, 8917, 9399, 9607, 26751, 27343, 28821, 82029, 115921, 178099, 347763, 355459, 534297, 1066377, 2315287, 6589663, 6945861, 19768989, 85665619, 256996857]

約数ペア:

[(1, 256996857), (3, 85665619), (13, 19768989), (37, 6945861), (39, 6589663), (111, 2315287), (241, 1066377), (481, 534297), (723, 355459), (739, 347763), (1443, 178099), (2217, 115921), (3133, 82029), (8917, 28821), (9399, 27343), (9607, 26751)]