19640551

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{2837}}^1$

素因数の和:2910

約数の個数: 16

約数和(自身を含む): 23975424

約数和(自身を除く): 4334873

約数列:

[1, 7, 23, 43, 161, 301, 989, 2837, 6923, 19859, 65251, 121991, 456757, 853937, 2805793, 19640551]

約数ペア:

[(1, 19640551), (7, 2805793), (23, 853937), (43, 456757), (161, 121991), (301, 65251), (989, 19859), (2837, 6923)]