28121163

素因数分解:

$3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{13001}}^1$

素因数の和:13114

約数の個数: 16

約数和(自身を含む): 43270656

約数和(自身を除く): 15149493

約数列:

[1, 3, 7, 21, 103, 309, 721, 2163, 13001, 39003, 91007, 273021, 1339103, 4017309, 9373721, 28121163]

約数ペア:

[(1, 28121163), (3, 9373721), (7, 4017309), (21, 1339103), (103, 273021), (309, 91007), (721, 39003), (2163, 13001)]