128961567

素因数分解:

$3^2\times 7^1\times {\mathrm{521}}^1\times {\mathrm{3929}}^1$

素因数の和:4463

約数の個数: 24

約数和(自身を含む): 213351840

約数和(自身を除く): 84390273

約数列:

[1, 3, 7, 9, 21, 63, 521, 1563, 3647, 3929, 4689, 10941, 11787, 27503, 32823, 35361, 82509, 247527, 2047009, 6141027, 14329063, 18423081, 42987189, 128961567]

約数ペア:

[(1, 128961567), (3, 42987189), (7, 18423081), (9, 14329063), (21, 6141027), (63, 2047009), (521, 247527), (1563, 82509), (3647, 35361), (3929, 32823), (4689, 27503), (10941, 11787)]