21043942

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{10639}}^1$

素因数の和:10707

約数の個数: 16

約数和(自身を含む): 33707520

約数和(自身を除く): 12663578

約数列:

[1, 2, 23, 43, 46, 86, 989, 1978, 10639, 21278, 244697, 457477, 489394, 914954, 10521971, 21043942]

約数ペア:

[(1, 21043942), (2, 10521971), (23, 914954), (43, 489394), (46, 457477), (86, 244697), (989, 21278), (1978, 10639)]