21668878

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{20101}}^1$

素因数の和:20128

約数の個数: 24

約数和(自身を含む): 41249304

約数和(自身を除く): 19580426

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 154, 539, 1078, 20101, 40202, 140707, 221111, 281414, 442222, 984949, 1547777, 1969898, 3095554, 10834439, 21668878]

約数ペア:

[(1, 21668878), (2, 10834439), (7, 3095554), (11, 1969898), (14, 1547777), (22, 984949), (49, 442222), (77, 281414), (98, 221111), (154, 140707), (539, 40202), (1078, 20101)]