21116545

素因数分解:

$5^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1\times {\mathrm{313}}^1$

素因数の和:552

約数の個数: 16

約数和(自身を含む): 25863552

約数和(自身を除く): 4747007

約数列:

[1, 5, 103, 131, 313, 515, 655, 1565, 13493, 32239, 41003, 67465, 161195, 205015, 4223309, 21116545]

約数ペア:

[(1, 21116545), (5, 4223309), (103, 205015), (131, 161195), (313, 67465), (515, 41003), (655, 32239), (1565, 13493)]