20128773

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{22291}}^1$

素因数の和:22344

約数の個数: 16

約数和(自身を含む): 31387136

約数和(自身を除く): 11258363

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 22291, 66873, 156037, 468111, 958513, 2875539, 6709591, 20128773]

約数ペア:

[(1, 20128773), (3, 6709591), (7, 2875539), (21, 958513), (43, 468111), (129, 156037), (301, 66873), (903, 22291)]