28119721

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{907}}^1$

素因数の和:1060

約数の個数: 16

約数和(自身を含む): 33240064

約数和(自身を除く): 5120343

約数列:

[1, 7, 43, 103, 301, 721, 907, 4429, 6349, 31003, 39001, 93421, 273007, 653947, 4017103, 28119721]

約数ペア:

[(1, 28119721), (7, 4017103), (43, 653947), (103, 273007), (301, 93421), (721, 39001), (907, 31003), (4429, 6349)]