19980857559

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{7215911}}^1$

素因数の和:7215998

約数の個数: 16

約数和(自身を含む): 29094557184

約数和(自身を除く): 9113699625

約数列:

[1, 3, 13, 39, 71, 213, 923, 2769, 7215911, 21647733, 93806843, 281420529, 512329681, 1536989043, 6660285853, 19980857559]

約数ペア:

[(1, 19980857559), (3, 6660285853), (13, 1536989043), (39, 512329681), (71, 281420529), (213, 93806843), (923, 21647733), (2769, 7215911)]