21357687

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{419}}^1\times {\mathrm{1307}}^1$

素因数の和:1742

約数の個数: 16

約数和(自身を含む): 30764160

約数和(自身を除く): 9406473

約数列:

[1, 3, 13, 39, 419, 1257, 1307, 3921, 5447, 16341, 16991, 50973, 547633, 1642899, 7119229, 21357687]

約数ペア:

[(1, 21357687), (3, 7119229), (13, 1642899), (39, 547633), (419, 50973), (1257, 16991), (1307, 16341), (3921, 5447)]