21627981

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{641}}^1$

素因数の和:833

約数の個数: 24

約数和(自身を含む): 32849856

約数和(自身を除く): 11221875

約数列:

[1, 3, 9, 23, 69, 163, 207, 489, 641, 1467, 1923, 3749, 5769, 11247, 14743, 33741, 44229, 104483, 132687, 313449, 940347, 2403109, 7209327, 21627981]

約数ペア:

[(1, 21627981), (3, 7209327), (9, 2403109), (23, 940347), (69, 313449), (163, 132687), (207, 104483), (489, 44229), (641, 33741), (1467, 14743), (1923, 11247), (3749, 5769)]