128857911

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{2237}}^1$

素因数の和:2471

約数の個数: 32

約数和(自身を含む): 212556288

約数和(自身を除く): 83698377

約数列:

[1, 3, 7, 13, 21, 39, 91, 211, 273, 633, 1477, 2237, 2743, 4431, 6711, 8229, 15659, 19201, 29081, 46977, 57603, 87243, 203567, 472007, 610701, 1416021, 3304049, 6136091, 9912147, 18408273, 42952637, 128857911]

約数ペア:

[(1, 128857911), (3, 42952637), (7, 18408273), (13, 9912147), (21, 6136091), (39, 3304049), (91, 1416021), (211, 610701), (273, 472007), (633, 203567), (1477, 87243), (2237, 57603), (2743, 46977), (4431, 29081), (6711, 19201), (8229, 15659)]