21306545

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{2011}}^1$

素因数の和:2192

約数の個数: 16

約数和(自身を含む): 27717312

約数和(自身を除く): 6410767

約数列:

[1, 5, 13, 65, 163, 815, 2011, 2119, 10055, 10595, 26143, 130715, 327793, 1638965, 4261309, 21306545]

約数ペア:

[(1, 21306545), (5, 4261309), (13, 1638965), (65, 327793), (163, 130715), (815, 26143), (2011, 10595), (2119, 10055)]