19971783

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{809}}^1$

素因数の和:1039

約数の個数: 24

約数和(自身を含む): 31253040

約数和(自身を除く): 11281257

約数列:

[1, 3, 9, 13, 39, 117, 211, 633, 809, 1899, 2427, 2743, 7281, 8229, 10517, 24687, 31551, 94653, 170699, 512097, 1536291, 2219087, 6657261, 19971783]

約数ペア:

[(1, 19971783), (3, 6657261), (9, 2219087), (13, 1536291), (39, 512097), (117, 170699), (211, 94653), (633, 31551), (809, 24687), (1899, 10517), (2427, 8229), (2743, 7281)]