21358444

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{5399}}^1$

素因数の和:5469

約数の個数: 24

約数和(自身を含む): 39916800

約数和(自身を除く): 18558356

約数列:

[1, 2, 4, 23, 43, 46, 86, 92, 172, 989, 1978, 3956, 5399, 10798, 21596, 124177, 232157, 248354, 464314, 496708, 928628, 5339611, 10679222, 21358444]

約数ペア:

[(1, 21358444), (2, 10679222), (4, 5339611), (23, 928628), (43, 496708), (46, 464314), (86, 248354), (92, 232157), (172, 124177), (989, 21596), (1978, 10798), (3956, 5399)]