21080901

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{281}}^1\times {\mathrm{1471}}^1$

素因数の和:1772

約数の個数: 16

約数和(自身を含む): 29887488

約数和(自身を除く): 8806587

約数列:

[1, 3, 17, 51, 281, 843, 1471, 4413, 4777, 14331, 25007, 75021, 413351, 1240053, 7026967, 21080901]

約数ペア:

[(1, 21080901), (3, 7026967), (17, 1240053), (51, 413351), (281, 75021), (843, 25007), (1471, 14331), (4413, 4777)]