19741981

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{7213}}^1$

素因数の和:7260

約数の個数: 16

約数和(自身を含む): 24931584

約数和(自身を除く): 5189603

約数列:

[1, 7, 17, 23, 119, 161, 391, 2737, 7213, 50491, 122621, 165899, 858347, 1161293, 2820283, 19741981]

約数ペア:

[(1, 19741981), (7, 2820283), (17, 1161293), (23, 858347), (119, 165899), (161, 122621), (391, 50491), (2737, 7213)]