21605516

素因数分解:

$2^2\times {\mathrm{101}}^1\times {\mathrm{53479}}^1$

素因数の和:53584

約数の個数: 12

約数和(自身を含む): 38184720

約数和(自身を除く): 16579204

約数列:

[1, 2, 4, 101, 202, 404, 53479, 106958, 213916, 5401379, 10802758, 21605516]

約数ペア:

[(1, 21605516), (2, 10802758), (4, 5401379), (101, 213916), (202, 106958), (404, 53479)]