20976831

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{179}}^1\times {\mathrm{449}}^1$

素因数の和:663

約数の個数: 24

約数和(自身を含む): 31590000

約数和(自身を除く): 10613169

約数列:

[1, 3, 9, 29, 87, 179, 261, 449, 537, 1347, 1611, 4041, 5191, 13021, 15573, 39063, 46719, 80371, 117189, 241113, 723339, 2330759, 6992277, 20976831]

約数ペア:

[(1, 20976831), (3, 6992277), (9, 2330759), (29, 723339), (87, 241113), (179, 117189), (261, 80371), (449, 46719), (537, 39063), (1347, 15573), (1611, 13021), (4041, 5191)]