865881

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:165

約数の個数: 24

約数和(自身を含む): 1347840

約数和(自身を除く): 481959

約数列:

[1, 3, 9, 23, 47, 69, 89, 141, 207, 267, 423, 801, 1081, 2047, 3243, 4183, 6141, 9729, 12549, 18423, 37647, 96209, 288627, 865881]

約数ペア:

[(1, 865881), (3, 288627), (9, 96209), (23, 37647), (47, 18423), (69, 12549), (89, 9729), (141, 6141), (207, 4183), (267, 3243), (423, 2047), (801, 1081)]