81912141

素因数分解:

$3^5\times {\mathrm{521}}^1\times {\mathrm{647}}^1$

素因数の和:1183

約数の個数: 24

約数和(自身を含む): 123125184

約数和(自身を除く): 41213043

約数列:

[1, 3, 9, 27, 81, 243, 521, 647, 1563, 1941, 4689, 5823, 14067, 17469, 42201, 52407, 126603, 157221, 337087, 1011261, 3033783, 9101349, 27304047, 81912141]

約数ペア:

[(1, 81912141), (3, 27304047), (9, 9101349), (27, 3033783), (81, 1011261), (243, 337087), (521, 157221), (647, 126603), (1563, 52407), (1941, 42201), (4689, 17469), (5823, 14067)]