21204424

素因数分解:

$2^3\times {\mathrm{109}}^1\times {\mathrm{24317}}^1$

素因数の和:24432

約数の個数: 16

約数和(自身を含む): 40124700

約数和(自身を除く): 18920276

約数列:

[1, 2, 4, 8, 109, 218, 436, 872, 24317, 48634, 97268, 194536, 2650553, 5301106, 10602212, 21204424]

約数ペア:

[(1, 21204424), (2, 10602212), (4, 5301106), (8, 2650553), (109, 194536), (218, 97268), (436, 48634), (872, 24317)]