20778795

素因数分解:

$3^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{1033}}^1$

素因数の和:1196

約数の個数: 32

約数和(自身を含む): 37224000

約数和(自身を除く): 16445205

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 149, 447, 745, 1033, 1341, 2235, 3099, 4023, 5165, 6705, 9297, 15495, 20115, 27891, 46485, 139455, 153917, 461751, 769585, 1385253, 2308755, 4155759, 6926265, 20778795]

約数ペア:

[(1, 20778795), (3, 6926265), (5, 4155759), (9, 2308755), (15, 1385253), (27, 769585), (45, 461751), (135, 153917), (149, 139455), (447, 46485), (745, 27891), (1033, 20115), (1341, 15495), (2235, 9297), (3099, 6705), (4023, 5165)]