21328088

素因数分解:

$2^3\times {\mathrm{349}}^1\times {\mathrm{7639}}^1$

素因数の和:7994

約数の個数: 16

約数和(自身を含む): 40110000

約数和(自身を除く): 18781912

約数列:

[1, 2, 4, 8, 349, 698, 1396, 2792, 7639, 15278, 30556, 61112, 2666011, 5332022, 10664044, 21328088]

約数ペア:

[(1, 21328088), (2, 10664044), (4, 5332022), (8, 2666011), (349, 61112), (698, 30556), (1396, 15278), (2792, 7639)]