21217017

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{7151}}^1$

素因数の和:7220

約数の個数: 16

約数和(自身を含む): 30210048

約数和(自身を除く): 8993031

約数列:

[1, 3, 23, 43, 69, 129, 989, 2967, 7151, 21453, 164473, 307493, 493419, 922479, 7072339, 21217017]

約数ペア:

[(1, 21217017), (3, 7072339), (23, 922479), (43, 493419), (69, 307493), (129, 164473), (989, 21453), (2967, 7151)]