21372207

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{5281}}^1$

素因数の和:5374

約数の個数: 16

約数和(自身を含む): 30424320

約数和(自身を除く): 9052113

約数列:

[1, 3, 19, 57, 71, 213, 1349, 4047, 5281, 15843, 100339, 301017, 374951, 1124853, 7124069, 21372207]

約数ペア:

[(1, 21372207), (3, 7124069), (19, 1124853), (57, 374951), (71, 301017), (213, 100339), (1349, 15843), (4047, 5281)]