20519703

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{191}}^1$

素因数の和:396

約数の個数: 32

約数和(自身を含む): 32071680

約数和(自身を除く): 11551977

約数列:

[1, 3, 9, 23, 27, 69, 173, 191, 207, 519, 573, 621, 1557, 1719, 3979, 4393, 4671, 5157, 11937, 13179, 33043, 35811, 39537, 99129, 107433, 118611, 297387, 759989, 892161, 2279967, 6839901, 20519703]

約数ペア:

[(1, 20519703), (3, 6839901), (9, 2279967), (23, 892161), (27, 759989), (69, 297387), (173, 118611), (191, 107433), (207, 99129), (519, 39537), (573, 35811), (621, 33043), (1557, 13179), (1719, 11937), (3979, 5157), (4393, 4671)]