20708385

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{72661}}^1$

素因数の和:72688

約数の個数: 16

約数和(自身を含む): 34877760

約数和(自身を除く): 14169375

約数列:

[1, 3, 5, 15, 19, 57, 95, 285, 72661, 217983, 363305, 1089915, 1380559, 4141677, 6902795, 20708385]

約数ペア:

[(1, 20708385), (3, 6902795), (5, 4141677), (15, 1380559), (19, 1089915), (57, 363305), (95, 217983), (285, 72661)]