21006687

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{5333}}^1$

素因数の和:5450

約数の個数: 16

約数和(自身を含む): 30467808

約数和(自身を除く): 9461121

約数列:

[1, 3, 13, 39, 101, 303, 1313, 3939, 5333, 15999, 69329, 207987, 538633, 1615899, 7002229, 21006687]

約数ペア:

[(1, 21006687), (3, 7002229), (13, 1615899), (39, 538633), (101, 207987), (303, 69329), (1313, 15999), (3939, 5333)]