2111809

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:240

約数の個数: 16

約数和(自身を含む): 2545920

約数和(自身を除く): 434111

約数列:

[1, 7, 29, 101, 103, 203, 707, 721, 2929, 2987, 10403, 20503, 20909, 72821, 301687, 2111809]

約数ペア:

[(1, 2111809), (7, 301687), (29, 72821), (101, 20909), (103, 20503), (203, 10403), (707, 2987), (721, 2929)]